[{"title":"Approximation, Proof Systems, and Correlations in a Quantum World","main_file_link":[{"open_access":"1"}],"oa":"1","date_updated":"2023-02-28T11:00:15Z","date_created":"2019-03-06T14:35:06Z","author":[{"first_name":"Sevag","orcid":"0000-0002-9992-3379","last_name":"Gharibian","id":"71541","full_name":"Gharibian, Sevag"}],"year":"2013","citation":{"mla":"Gharibian, Sevag. <i>Approximation, Proof Systems, and Correlations in a Quantum World</i>. 2013.","short":"S. Gharibian, Approximation, Proof Systems, and Correlations in a Quantum World, 2013.","bibtex":"@book{Gharibian_2013, title={Approximation, Proof Systems, and Correlations in a Quantum World}, author={Gharibian, Sevag}, year={2013} }","apa":"Gharibian, S. (2013). <i>Approximation, Proof Systems, and Correlations in a Quantum World</i>.","ama":"Gharibian S. <i>Approximation, Proof Systems, and Correlations in a Quantum World</i>.; 2013.","ieee":"S. Gharibian, <i>Approximation, Proof Systems, and Correlations in a Quantum World</i>. 2013.","chicago":"Gharibian, Sevag. <i>Approximation, Proof Systems, and Correlations in a Quantum World</i>, 2013."},"page":"240","related_material":{"link":[{"relation":"confirmation","url":"https://arxiv.org/abs/1301.2632"}]},"language":[{"iso":"eng"}],"extern":"1","external_id":{"arxiv":["1301.2632"]},"_id":"8425","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"abstract":[{"text":"This thesis studies three topics in quantum computation and information: The approximability of quantum problems, quantum proof systems, and non-classical correlations in quantum systems. \r\n\r\nIn the first area, we demonstrate a polynomial-time (classical) approximation algorithm for dense instances of the canonical QMA-complete quantum constraint satisfaction problem, the local Hamiltonian problem. In the opposite direction, we next introduce a quantum generalization of the polynomial-time hierarchy, and define problems which we prove are not only complete for the second level of this hierarchy, but are in fact hard to approximate. \r\n\r\nIn the second area, we study variants of the interesting and stubbornly open question of whether a quantum proof system with multiple unentangled quantum provers is equal in expressive power to a proof system with a single quantum prover. Our results concern classes such as BellQMA(poly), and include a novel proof of perfect parallel repetition for SepQMA(m) based on cone programming duality. \r\n\r\nIn the third area, we study non-classical quantum correlations beyond entanglement, often dubbed \"non-classicality\". Among our results are two novel schemes for quantifying non-classicality: The first proposes the new paradigm of exploiting local unitary operations to study non-classical correlations, and the second introduces a protocol through which non-classical correlations in a starting system can be \"activated\" into distillable entanglement with an ancilla system. \r\n\r\nAn introduction to all required linear algebra and quantum mechanics is included.","lang":"eng"}],"status":"public","type":"dissertation"},{"author":[{"first_name":"Sevag","last_name":"Gharibian","orcid":"0000-0002-9992-3379","full_name":"Gharibian, Sevag","id":"71541"},{"first_name":"Jamie","full_name":"Sikora, Jamie","last_name":"Sikora"},{"first_name":"Sarvagya","full_name":"Upadhyay, Sarvagya","last_name":"Upadhyay"}],"volume":13,"oa":"1","date_updated":"2023-02-28T11:03:13Z","main_file_link":[{"url":"https://arxiv.org/abs/1108.0617","open_access":"1"}],"publication_status":"published","citation":{"apa":"Gharibian, S., Sikora, J., &#38; Upadhyay, S. (2013). QMA variants with polynomially many provers. <i>Quantum Information &#38; Computation</i>, <i>13</i>(1–2), 135–157.","bibtex":"@article{Gharibian_Sikora_Upadhyay_2013, title={QMA variants with polynomially many provers}, volume={13}, number={1–2}, journal={Quantum Information &#38; Computation}, author={Gharibian, Sevag and Sikora, Jamie and Upadhyay, Sarvagya}, year={2013}, pages={135–157} }","short":"S. Gharibian, J. Sikora, S. Upadhyay, Quantum Information &#38; Computation 13 (2013) 135–157.","mla":"Gharibian, Sevag, et al. “QMA Variants with Polynomially Many Provers.” <i>Quantum Information &#38; Computation</i>, vol. 13, no. 1–2, 2013, pp. 135–57.","ieee":"S. Gharibian, J. Sikora, and S. Upadhyay, “QMA variants with polynomially many provers,” <i>Quantum Information &#38; Computation</i>, vol. 13, no. 1–2, pp. 135–157, 2013.","chicago":"Gharibian, Sevag, Jamie Sikora, and Sarvagya Upadhyay. “QMA Variants with Polynomially Many Provers.” <i>Quantum Information &#38; Computation</i> 13, no. 1–2 (2013): 135–57.","ama":"Gharibian S, Sikora J, Upadhyay S. QMA variants with polynomially many provers. <i>Quantum Information &#38; Computation</i>. 2013;13(1-2):135-157."},"page":"135-157","intvolume":"        13","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"_id":"8173","extern":"1","article_type":"original","type":"journal_article","status":"public","date_created":"2019-03-01T12:00:39Z","title":"QMA variants with polynomially many provers","issue":"1-2","year":"2013","external_id":{"arxiv":["1108.0617"]},"language":[{"iso":"eng"}],"publication":"Quantum Information & Computation","abstract":[{"text":"We study three variants of multi-prover quantum Merlin-Arthur proof systems. We first show that the class of problems that can be efficiently verified using polynomially many quantum proofs, each of logarithmic-size, is exactly MQA (also known as QCMA), the class of problems which can be efficiently verified via a classical proof and a quantum verifier. We then study the class BellQMA(poly), characterized by a verifier who first applies unentangled, nonadaptive measurements to each of the polynomially many proofs, followed by an arbitrary but efficient quantum verification circuit on the resulting measurement outcomes. We show that if the number of outcomes per nonadaptive measurement is a polynomially-bounded function, then the expressive power of the proof system is exactly QMA. Finally, we study a class equivalent to QMA(m), denoted SepQMA(m), where the verifier's measurement operator corresponding to outcome \"accept\" is a fully separable operator across the m quantum proofs. Using cone programming duality, we give an alternate proof of a result of Harrow and Montanaro [FOCS, pp. 633--642 (2010)] that shows a perfect parallel repetition theorem for SepQMA(m) for any m.","lang":"eng"}]},{"external_id":{"arxiv":["1209.2304"]},"keyword":["Industrial and Manufacturing Engineering","Metals and Alloys","Strategy and Management","Mechanical Engineering"],"language":[{"iso":"eng"}],"publication":"Physical Review E","publisher":"American Physical Society (APS)","date_created":"2022-05-17T13:01:39Z","title":"Weyl asymptotics: From closed to open systems","issue":"6","year":"2012","_id":"31300","department":[{"_id":"10"},{"_id":"623"},{"_id":"548"}],"user_id":"49178","article_number":"066205","type":"journal_article","status":"public","date_updated":"2022-05-19T10:18:57Z","volume":86,"author":[{"last_name":"Potzuweit","full_name":"Potzuweit, A.","first_name":"A."},{"first_name":"Tobias","last_name":"Weich","orcid":"0000-0002-9648-6919","full_name":"Weich, Tobias","id":"49178"},{"full_name":"Barkhofen, Sonja","id":"48188","last_name":"Barkhofen","first_name":"Sonja"},{"full_name":"Kuhl, U.","last_name":"Kuhl","first_name":"U."},{"first_name":"H.-J.","last_name":"Stöckmann","full_name":"Stöckmann, H.-J."},{"first_name":"M.","last_name":"Zworski","full_name":"Zworski, M."}],"doi":"10.1103/physreve.86.066205","publication_identifier":{"issn":["1539-3755","1550-2376"]},"publication_status":"published","intvolume":"        86","citation":{"ama":"Potzuweit A, Weich T, Barkhofen S, Kuhl U, Stöckmann H-J, Zworski M. Weyl asymptotics: From closed to open systems. <i>Physical Review E</i>. 2012;86(6). doi:<a href=\"https://doi.org/10.1103/physreve.86.066205\">10.1103/physreve.86.066205</a>","ieee":"A. Potzuweit, T. Weich, S. Barkhofen, U. Kuhl, H.-J. Stöckmann, and M. Zworski, “Weyl asymptotics: From closed to open systems,” <i>Physical Review E</i>, vol. 86, no. 6, Art. no. 066205, 2012, doi: <a href=\"https://doi.org/10.1103/physreve.86.066205\">10.1103/physreve.86.066205</a>.","chicago":"Potzuweit, A., Tobias Weich, Sonja Barkhofen, U. Kuhl, H.-J. Stöckmann, and M. Zworski. “Weyl Asymptotics: From Closed to Open Systems.” <i>Physical Review E</i> 86, no. 6 (2012). <a href=\"https://doi.org/10.1103/physreve.86.066205\">https://doi.org/10.1103/physreve.86.066205</a>.","apa":"Potzuweit, A., Weich, T., Barkhofen, S., Kuhl, U., Stöckmann, H.-J., &#38; Zworski, M. (2012). Weyl asymptotics: From closed to open systems. <i>Physical Review E</i>, <i>86</i>(6), Article 066205. <a href=\"https://doi.org/10.1103/physreve.86.066205\">https://doi.org/10.1103/physreve.86.066205</a>","mla":"Potzuweit, A., et al. “Weyl Asymptotics: From Closed to Open Systems.” <i>Physical Review E</i>, vol. 86, no. 6, 066205, American Physical Society (APS), 2012, doi:<a href=\"https://doi.org/10.1103/physreve.86.066205\">10.1103/physreve.86.066205</a>.","bibtex":"@article{Potzuweit_Weich_Barkhofen_Kuhl_Stöckmann_Zworski_2012, title={Weyl asymptotics: From closed to open systems}, volume={86}, DOI={<a href=\"https://doi.org/10.1103/physreve.86.066205\">10.1103/physreve.86.066205</a>}, number={6066205}, journal={Physical Review E}, publisher={American Physical Society (APS)}, author={Potzuweit, A. and Weich, Tobias and Barkhofen, Sonja and Kuhl, U. and Stöckmann, H.-J. and Zworski, M.}, year={2012} }","short":"A. Potzuweit, T. Weich, S. Barkhofen, U. Kuhl, H.-J. Stöckmann, M. Zworski, Physical Review E 86 (2012)."}},{"language":[{"iso":"eng"}],"article_number":"27388","keyword":["Atomic and Molecular Physics","and Optics"],"user_id":"26263","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"},{"_id":"230"}],"_id":"40165","status":"public","type":"journal_article","publication":"Optics Express","doi":"10.1364/oe.20.027388","title":"High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal","date_created":"2023-01-26T07:45:34Z","author":[{"first_name":"Dror","full_name":"Shayovitz, Dror","last_name":"Shayovitz"},{"full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann","first_name":"Harald"},{"first_name":"Wolfgang","full_name":"Sohler, Wolfgang","last_name":"Sohler"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"},{"first_name":"Dan M.","full_name":"Marom, Dan M.","last_name":"Marom"}],"volume":20,"publisher":"The Optical Society","date_updated":"2023-01-30T12:45:02Z","citation":{"apa":"Shayovitz, D., Herrmann, H., Sohler, W., Ricken, R., Silberhorn, C., &#38; Marom, D. M. (2012). High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal. <i>Optics Express</i>, <i>20</i>(24), Article 27388. <a href=\"https://doi.org/10.1364/oe.20.027388\">https://doi.org/10.1364/oe.20.027388</a>","bibtex":"@article{Shayovitz_Herrmann_Sohler_Ricken_Silberhorn_Marom_2012, title={High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal}, volume={20}, DOI={<a href=\"https://doi.org/10.1364/oe.20.027388\">10.1364/oe.20.027388</a>}, number={2427388}, journal={Optics Express}, publisher={The Optical Society}, author={Shayovitz, Dror and Herrmann, Harald and Sohler, Wolfgang and Ricken, Raimund and Silberhorn, Christine and Marom, Dan M.}, year={2012} }","short":"D. Shayovitz, H. Herrmann, W. Sohler, R. Ricken, C. Silberhorn, D.M. Marom, Optics Express 20 (2012).","mla":"Shayovitz, Dror, et al. “High Resolution Time-to-Space Conversion of Sub-Picosecond Pulses at 155µm by Non-Degenerate SFG in PPLN Crystal.” <i>Optics Express</i>, vol. 20, no. 24, 27388, The Optical Society, 2012, doi:<a href=\"https://doi.org/10.1364/oe.20.027388\">10.1364/oe.20.027388</a>.","ama":"Shayovitz D, Herrmann H, Sohler W, Ricken R, Silberhorn C, Marom DM. High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal. <i>Optics Express</i>. 2012;20(24). doi:<a href=\"https://doi.org/10.1364/oe.20.027388\">10.1364/oe.20.027388</a>","chicago":"Shayovitz, Dror, Harald Herrmann, Wolfgang Sohler, Raimund Ricken, Christine Silberhorn, and Dan M. Marom. “High Resolution Time-to-Space Conversion of Sub-Picosecond Pulses at 155µm by Non-Degenerate SFG in PPLN Crystal.” <i>Optics Express</i> 20, no. 24 (2012). <a href=\"https://doi.org/10.1364/oe.20.027388\">https://doi.org/10.1364/oe.20.027388</a>.","ieee":"D. Shayovitz, H. Herrmann, W. Sohler, R. Ricken, C. Silberhorn, and D. M. Marom, “High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal,” <i>Optics Express</i>, vol. 20, no. 24, Art. no. 27388, 2012, doi: <a href=\"https://doi.org/10.1364/oe.20.027388\">10.1364/oe.20.027388</a>."},"intvolume":"        20","year":"2012","issue":"24","publication_status":"published","publication_identifier":{"issn":["1094-4087"]}},{"status":"public","type":"journal_article","publication":"New Journal of Physics","article_number":"105011","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}],"_id":"40167","user_id":"26263","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"},{"_id":"230"}],"year":"2012","citation":{"ama":"Laiho K, Avenhaus M, Silberhorn C. Characteristics of displaced single photons attained via higher order factorial moments. <i>New Journal of Physics</i>. 2012;14(10). doi:<a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">10.1088/1367-2630/14/10/105011</a>","chicago":"Laiho, Kaisa, Malte Avenhaus, and Christine Silberhorn. “Characteristics of Displaced Single Photons Attained via Higher Order Factorial Moments.” <i>New Journal of Physics</i> 14, no. 10 (2012). <a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">https://doi.org/10.1088/1367-2630/14/10/105011</a>.","ieee":"K. Laiho, M. Avenhaus, and C. Silberhorn, “Characteristics of displaced single photons attained via higher order factorial moments,” <i>New Journal of Physics</i>, vol. 14, no. 10, Art. no. 105011, 2012, doi: <a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">10.1088/1367-2630/14/10/105011</a>.","mla":"Laiho, Kaisa, et al. “Characteristics of Displaced Single Photons Attained via Higher Order Factorial Moments.” <i>New Journal of Physics</i>, vol. 14, no. 10, 105011, IOP Publishing, 2012, doi:<a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">10.1088/1367-2630/14/10/105011</a>.","bibtex":"@article{Laiho_Avenhaus_Silberhorn_2012, title={Characteristics of displaced single photons attained via higher order factorial moments}, volume={14}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">10.1088/1367-2630/14/10/105011</a>}, number={10105011}, journal={New Journal of Physics}, publisher={IOP Publishing}, author={Laiho, Kaisa and Avenhaus, Malte and Silberhorn, Christine}, year={2012} }","short":"K. Laiho, M. Avenhaus, C. Silberhorn, New Journal of Physics 14 (2012).","apa":"Laiho, K., Avenhaus, M., &#38; Silberhorn, C. (2012). Characteristics of displaced single photons attained via higher order factorial moments. <i>New Journal of Physics</i>, <i>14</i>(10), Article 105011. <a href=\"https://doi.org/10.1088/1367-2630/14/10/105011\">https://doi.org/10.1088/1367-2630/14/10/105011</a>"},"intvolume":"        14","publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"issue":"10","title":"Characteristics of displaced single photons attained via higher order factorial moments","doi":"10.1088/1367-2630/14/10/105011","date_updated":"2023-01-30T12:45:38Z","publisher":"IOP Publishing","author":[{"first_name":"Kaisa","full_name":"Laiho, Kaisa","last_name":"Laiho"},{"full_name":"Avenhaus, Malte","last_name":"Avenhaus","first_name":"Malte"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2023-01-26T07:48:21Z","volume":14},{"issue":"4","year":"2012","page":"687-696","intvolume":"       249","citation":{"apa":"Rastelli, A., Ding, F., Plumhof, J. D., Kumar, S., Trotta, R., Deneke, C.,  Malachias, A., Atkinson, P., Zallo, E., Zander, T., Herklotz, A.,  Singh, R., Krápek, V., Schrötel, J. R.,  Kiravittaya, S., Benyoucef, M., Hafenbrak, R., Jöns, K. D., Thurmer, D. J., … Schmidt, O. G. (2012). <i>Controlling quantum dot emission by integration of semiconductor nanomembranes onto piezoelectric actuators</i> (Vol. 249, Issue 4, pp. 687–696).","mla":"Rastelli, A., et al. <i>Controlling Quantum Dot Emission by Integration of Semiconductor Nanomembranes onto Piezoelectric Actuators</i>. no. 4, 2012, pp. 687–96.","short":"A. Rastelli, F. Ding, J.D. Plumhof, S. Kumar, R. Trotta, C. Deneke, A.  Malachias, P. Atkinson, E. Zallo, T. Zander, A. Herklotz, R.  Singh, V. Krápek, J.R. Schrötel, S.  Kiravittaya, M. Benyoucef, R. Hafenbrak, K.D. Jöns, D.J. Thurmer, D. Grimm, G.  Bester, K. Dörr, P. Michler, O.G. Schmidt, 249 (2012) 687–696.","bibtex":"@article{Rastelli_Ding_Plumhof_Kumar_Trotta_Deneke_ Malachias_Atkinson_Zallo_Zander_et al._2012, series={Phys. Status Solidi B }, title={Controlling quantum dot emission by integration of semiconductor nanomembranes onto piezoelectric actuators}, volume={249}, number={4}, author={Rastelli, A and Ding, F and Plumhof, J.D and Kumar, S and Trotta, R and Deneke, C and  Malachias, A and Atkinson, P and Zallo, E and Zander, T and et al.}, year={2012}, pages={687–696}, collection={Phys. Status Solidi B } }","ama":"Rastelli A, Ding F, Plumhof JD, et al. Controlling quantum dot emission by integration of semiconductor nanomembranes onto piezoelectric actuators. 2012;249(4):687-696.","chicago":"Rastelli, A, F Ding, J.D Plumhof, S Kumar, R Trotta, C Deneke, A  Malachias, et al. “Controlling Quantum Dot Emission by Integration of Semiconductor Nanomembranes onto Piezoelectric Actuators.” Phys. Status Solidi B , 2012.","ieee":"A. Rastelli <i>et al.</i>, “Controlling quantum dot emission by integration of semiconductor nanomembranes onto piezoelectric actuators,” vol. 249, no. 4. pp. 687–696, 2012."},"date_updated":"2023-02-13T08:44:28Z","volume":249,"date_created":"2023-02-13T08:44:08Z","author":[{"first_name":"A","last_name":"Rastelli","full_name":"Rastelli, A"},{"first_name":"F","full_name":"Ding, F","last_name":"Ding"},{"full_name":"Plumhof, J.D","last_name":"Plumhof","first_name":"J.D"},{"first_name":"S","full_name":"Kumar, S","last_name":"Kumar"},{"first_name":"R","full_name":"Trotta, R","last_name":"Trotta"},{"last_name":"Deneke","full_name":"Deneke, C","first_name":"C"},{"full_name":" Malachias, A","last_name":" Malachias","first_name":"A"},{"first_name":"P","last_name":"Atkinson","full_name":"Atkinson, P"},{"full_name":"Zallo, E","last_name":"Zallo","first_name":"E"},{"first_name":"T","last_name":"Zander","full_name":"Zander, T"},{"full_name":"Herklotz, A","last_name":"Herklotz","first_name":"A"},{"first_name":"R","last_name":" Singh","full_name":" Singh, R"},{"last_name":"Krápek","full_name":"Krápek, V","first_name":"V"},{"first_name":"J.R","full_name":"Schrötel, J.R","last_name":"Schrötel"},{"first_name":"S","full_name":" Kiravittaya, S","last_name":" Kiravittaya"},{"full_name":"Benyoucef,, M","last_name":"Benyoucef,","first_name":"M"},{"first_name":"R","last_name":"Hafenbrak","full_name":"Hafenbrak, R"},{"last_name":"Jöns","id":"85353","full_name":"Jöns, Klaus D.","first_name":"Klaus D."},{"first_name":"D.J","full_name":"Thurmer, D.J","last_name":"Thurmer"},{"full_name":"Grimm, D","last_name":"Grimm","first_name":"D"},{"first_name":"G","full_name":" Bester, G","last_name":" Bester"},{"last_name":"Dörr","full_name":"Dörr, K","first_name":"K"},{"last_name":"Michler","full_name":"Michler, P","first_name":"P"},{"full_name":"Schmidt, O.G","last_name":"Schmidt","first_name":"O.G"}],"title":"Controlling quantum dot emission by integration of semiconductor nanomembranes onto piezoelectric actuators","type":"conference","status":"public","_id":"42033","department":[{"_id":"623"}],"series_title":"Phys. Status Solidi B ","user_id":"71124","language":[{"iso":"eng"}]},{"article_number":"063526","language":[{"iso":"ger"}],"_id":"42028","user_id":"71124","series_title":"Journal of Applied Physics ","department":[{"_id":"623"}],"status":"public","type":"conference","title":"Polarization anisotropic luminescence of tunable single lateral quantum dot molecules","date_updated":"2023-02-13T08:45:12Z","author":[{"first_name":"C","full_name":"Hermannstädter, C","last_name":"Hermannstädter"},{"last_name":" Witzany","full_name":" Witzany, M","first_name":"M"},{"first_name":"M","last_name":"Heldmaier","full_name":"Heldmaier, M"},{"last_name":"Hafenbrak","full_name":"Hafenbrak, R","first_name":"R"},{"first_name":"Klaus D.","full_name":"Jöns, Klaus D.","id":"85353","last_name":"Jöns"},{"last_name":"Beirne","full_name":"Beirne, G.J","first_name":"G.J"},{"first_name":"P","last_name":"Michler","full_name":"Michler, P"}],"date_created":"2023-02-13T08:06:58Z","volume":111,"year":"2012","citation":{"bibtex":"@article{Hermannstädter_ Witzany_Heldmaier_Hafenbrak_Jöns_Beirne_Michler_2012, series={Journal of Applied Physics }, title={Polarization anisotropic luminescence of tunable single lateral quantum dot molecules}, volume={111}, number={063526}, author={Hermannstädter, C and  Witzany, M and Heldmaier, M and Hafenbrak, R and Jöns, Klaus D. and Beirne, G.J and Michler, P}, year={2012}, collection={Journal of Applied Physics } }","short":"C. Hermannstädter, M.  Witzany, M. Heldmaier, R. Hafenbrak, K.D. Jöns, G.J. Beirne, P. Michler, 111 (2012).","mla":"Hermannstädter, C., et al. <i>Polarization anisotropic luminescence of tunable single lateral quantum dot molecules</i>. 063526, 2012.","apa":"Hermannstädter, C.,  Witzany, M., Heldmaier, M., Hafenbrak, R., Jöns, K. D., Beirne, G. J., &#38; Michler, P. (2012). <i>Polarization anisotropic luminescence of tunable single lateral quantum dot molecules</i> (No. 063526; Vol. 111).","ama":"Hermannstädter C,  Witzany M, Heldmaier M, et al. Polarization anisotropic luminescence of tunable single lateral quantum dot molecules. 2012;111.","ieee":"C. Hermannstädter <i>et al.</i>, “Polarization anisotropic luminescence of tunable single lateral quantum dot molecules,” vol. 111. 2012.","chicago":"Hermannstädter, C, M  Witzany, M Heldmaier, R Hafenbrak, Klaus D. Jöns, G.J Beirne, and P Michler. “Polarization anisotropic luminescence of tunable single lateral quantum dot molecules.” Journal of Applied Physics , 2012."},"intvolume":"       111","publication_status":"published"},{"type":"conference","status":"public","_id":"42029","department":[{"_id":"623"}],"series_title":"Phys. Status Solidi B ","user_id":"71124","language":[{"iso":"eng"}],"issue":"4","year":"2012","intvolume":"       249","page":"697-701","citation":{"mla":"Jöns, Klaus D., et al. <i>Quantum State Tomography Measurements on Strain-Tuned In(x)Ga(1−x)As/GaAs Quantum Dots</i>. no. 4, 2012, pp. 697–701.","short":"K.D. Jöns, R. Hafenbrak, P. Atkinson, A. Rastelli, O.G. Schmidt, P. Michler, 249 (2012) 697–701.","bibtex":"@article{Jöns_Hafenbrak_Atkinson_Rastelli_Schmidt_Michler_2012, series={Phys. Status Solidi B }, title={Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots}, volume={249}, number={4}, author={Jöns, Klaus D. and Hafenbrak, R and Atkinson, P and Rastelli, A and Schmidt, O.G and Michler, P}, year={2012}, pages={697–701}, collection={Phys. Status Solidi B } }","apa":"Jöns, K. D., Hafenbrak, R., Atkinson, P., Rastelli, A., Schmidt, O. G., &#38; Michler, P. (2012). <i>Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots</i> (Vol. 249, Issue 4, pp. 697–701).","ama":"Jöns KD, Hafenbrak R, Atkinson P, Rastelli A, Schmidt OG, Michler P. Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots. 2012;249(4):697-701.","ieee":"K. D. Jöns, R. Hafenbrak, P. Atkinson, A. Rastelli, O. G. Schmidt, and P. Michler, “Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots,” vol. 249, no. 4. pp. 697–701, 2012.","chicago":"Jöns, Klaus D., R Hafenbrak, P Atkinson, A Rastelli, O.G Schmidt, and P Michler. “Quantum State Tomography Measurements on Strain-Tuned In(x)Ga(1−x)As/GaAs Quantum Dots.” Phys. Status Solidi B , 2012."},"date_updated":"2023-02-13T08:44:41Z","volume":249,"date_created":"2023-02-13T08:13:12Z","author":[{"first_name":"Klaus D.","last_name":"Jöns","id":"85353","full_name":"Jöns, Klaus D."},{"first_name":"R","full_name":"Hafenbrak, R","last_name":"Hafenbrak"},{"last_name":"Atkinson","full_name":"Atkinson, P","first_name":"P"},{"first_name":"A","last_name":"Rastelli","full_name":"Rastelli, A"},{"last_name":"Schmidt","full_name":"Schmidt, O.G","first_name":"O.G"},{"last_name":"Michler","full_name":"Michler, P","first_name":"P"}],"title":"Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots"},{"extern":"1","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"_id":"8169","status":"public","editor":[{"first_name":"Artur","last_name":"Czumaj","full_name":"Czumaj, Artur"},{"first_name":"Kurt","full_name":"Mehlhorn, Kurt","last_name":"Mehlhorn"},{"last_name":"Pitts","full_name":"Pitts, Andrew","first_name":"Andrew"},{"last_name":"Wattenhofer","full_name":"Wattenhofer, Roger","first_name":"Roger"}],"type":"conference","main_file_link":[{"url":"https://arxiv.org/abs/1209.1055","open_access":"1"}],"conference":{"name":"International Colloquium on Automata, Languages, and Programming (ICALP)","location":"Warwick, UK"},"doi":"10.1007/978-3-642-31594-7_33","author":[{"full_name":"Gharibian, Sevag","id":"71541","last_name":"Gharibian","orcid":"0000-0002-9992-3379","first_name":"Sevag"},{"last_name":"Kempe","full_name":"Kempe, Julia","first_name":"Julia"}],"oa":"1","date_updated":"2023-02-28T11:03:26Z","citation":{"bibtex":"@inproceedings{Gharibian_Kempe_2012, place={Berlin, Heidelberg}, title={Hardness of Approximation for Quantum Problems}, DOI={<a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">10.1007/978-3-642-31594-7_33</a>}, booktitle={International Colloquium on Automata, Languages, and Programming (ICALP 2012)}, publisher={Springer Berlin Heidelberg}, author={Gharibian, Sevag and Kempe, Julia}, editor={Czumaj, Artur and Mehlhorn, Kurt and Pitts, Andrew and Wattenhofer, Roger}, year={2012}, pages={387–398} }","mla":"Gharibian, Sevag, and Julia Kempe. “Hardness of Approximation for Quantum Problems.” <i>International Colloquium on Automata, Languages, and Programming (ICALP 2012)</i>, edited by Artur Czumaj et al., Springer Berlin Heidelberg, 2012, pp. 387–98, doi:<a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">10.1007/978-3-642-31594-7_33</a>.","short":"S. Gharibian, J. Kempe, in: A. Czumaj, K. Mehlhorn, A. Pitts, R. Wattenhofer (Eds.), International Colloquium on Automata, Languages, and Programming (ICALP 2012), Springer Berlin Heidelberg, Berlin, Heidelberg, 2012, pp. 387–398.","apa":"Gharibian, S., &#38; Kempe, J. (2012). Hardness of Approximation for Quantum Problems. In A. Czumaj, K. Mehlhorn, A. Pitts, &#38; R. Wattenhofer (Eds.), <i>International Colloquium on Automata, Languages, and Programming (ICALP 2012)</i> (pp. 387–398). Springer Berlin Heidelberg. <a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">https://doi.org/10.1007/978-3-642-31594-7_33</a>","chicago":"Gharibian, Sevag, and Julia Kempe. “Hardness of Approximation for Quantum Problems.” In <i>International Colloquium on Automata, Languages, and Programming (ICALP 2012)</i>, edited by Artur Czumaj, Kurt Mehlhorn, Andrew Pitts, and Roger Wattenhofer, 387–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. <a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">https://doi.org/10.1007/978-3-642-31594-7_33</a>.","ieee":"S. Gharibian and J. Kempe, “Hardness of Approximation for Quantum Problems,” in <i>International Colloquium on Automata, Languages, and Programming (ICALP 2012)</i>, Warwick, UK, 2012, pp. 387–398, doi: <a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">10.1007/978-3-642-31594-7_33</a>.","ama":"Gharibian S, Kempe J. Hardness of Approximation for Quantum Problems. In: Czumaj A, Mehlhorn K, Pitts A, Wattenhofer R, eds. <i>International Colloquium on Automata, Languages, and Programming (ICALP 2012)</i>. Springer Berlin Heidelberg; 2012:387-398. doi:<a href=\"https://doi.org/10.1007/978-3-642-31594-7_33\">10.1007/978-3-642-31594-7_33</a>"},"page":"387-398","place":"Berlin, Heidelberg","publication_status":"published","publication_identifier":{"isbn":["978-3-642-31594-7"]},"language":[{"iso":"eng"}],"external_id":{"arxiv":["1209.1055"]},"abstract":[{"lang":"eng","text":"The polynomial hierarchy plays a central role in classical complexity theory. Here, we define a quantum generalization of the polynomial hierarchy, and initiate its study. We show that not only are there natural complete problems for the second level of this quantum hierarchy, but that these problems are in fact hard to approximate. Our work thus yields the first known hardness of approximation results for a quantum complexity class. Using these techniques, we also obtain hardness of approximation for the class QCMA. Our approach is based on the use of dispersers, and is inspired by the classical results of Umans regarding hardness of approximation for the second level of the classical polynomial hierarchy (Umans 1999). We close by showing that a variant of the local Hamiltonian problem with hybrid classical-quantum ground states is complete for the second level of our quantum hierarchy."}],"publication":"International Colloquium on Automata, Languages, and Programming (ICALP 2012)","title":"Hardness of Approximation for Quantum Problems","date_created":"2019-03-01T11:55:18Z","publisher":"Springer Berlin Heidelberg","year":"2012"},{"article_type":"original","extern":"1","_id":"8175","department":[{"_id":"623"},{"_id":"7"}],"user_id":"71541","status":"public","type":"journal_article","doi":"10.1137/110842272","main_file_link":[{"url":"https://arxiv.org/abs/1101.3884","open_access":"1"}],"date_updated":"2023-02-28T11:03:50Z","oa":"1","volume":41,"author":[{"first_name":"Sevag","full_name":"Gharibian, Sevag","id":"71541","orcid":"0000-0002-9992-3379","last_name":"Gharibian"},{"first_name":"Julia","last_name":"Kempe","full_name":"Kempe, Julia"}],"page":"1028-1050","intvolume":"        41","citation":{"chicago":"Gharibian, Sevag, and Julia Kempe. “Approximation Algorithms for QMA-Complete Problems.” <i>SIAM Journal on Computing</i> 41, no. 4 (2012): 1028–50. <a href=\"https://doi.org/10.1137/110842272\">https://doi.org/10.1137/110842272</a>.","ieee":"S. Gharibian and J. Kempe, “Approximation Algorithms for QMA-Complete Problems,” <i>SIAM Journal on Computing</i>, vol. 41, no. 4, pp. 1028–1050, 2012, doi: <a href=\"https://doi.org/10.1137/110842272\">10.1137/110842272</a>.","ama":"Gharibian S, Kempe J. Approximation Algorithms for QMA-Complete Problems. <i>SIAM Journal on Computing</i>. 2012;41(4):1028-1050. doi:<a href=\"https://doi.org/10.1137/110842272\">10.1137/110842272</a>","bibtex":"@article{Gharibian_Kempe_2012, title={Approximation Algorithms for QMA-Complete Problems}, volume={41}, DOI={<a href=\"https://doi.org/10.1137/110842272\">10.1137/110842272</a>}, number={4}, journal={SIAM Journal on Computing}, publisher={Society for Industrial &#38; Applied Mathematics (SIAM)}, author={Gharibian, Sevag and Kempe, Julia}, year={2012}, pages={1028–1050} }","short":"S. Gharibian, J. Kempe, SIAM Journal on Computing 41 (2012) 1028–1050.","mla":"Gharibian, Sevag, and Julia Kempe. “Approximation Algorithms for QMA-Complete Problems.” <i>SIAM Journal on Computing</i>, vol. 41, no. 4, Society for Industrial &#38; Applied Mathematics (SIAM), 2012, pp. 1028–50, doi:<a href=\"https://doi.org/10.1137/110842272\">10.1137/110842272</a>.","apa":"Gharibian, S., &#38; Kempe, J. (2012). Approximation Algorithms for QMA-Complete Problems. <i>SIAM Journal on Computing</i>, <i>41</i>(4), 1028–1050. <a href=\"https://doi.org/10.1137/110842272\">https://doi.org/10.1137/110842272</a>"},"publication_identifier":{"issn":["0097-5397","1095-7111"]},"publication_status":"published","language":[{"iso":"eng"}],"external_id":{"arxiv":["1101.3884"]},"abstract":[{"lang":"eng","text":"Approximation algorithms for classical constraint satisfaction problems are one of the main research areas in theoretical computer science. Here we define a natural approximation version of the QMA-complete local Hamiltonian problem (where QMA stands for Quantum Merlin Arthur) and initiate its study. We present two main results. The first shows that a nontrivial approximation ratio can be obtained in the class NP using product states. The second result (which builds on the first one) gives a polynomial time (classical) algorithm providing a similar approximation ratio for dense instances of the problem. The latter result is based on an adaptation of the “exhaustive sampling method” by Arora, Karger, and Karpinski [J. Comput. System Sci., 58 (1999), p. 193] to the quantum setting and might be of independent interest."}],"publication":"SIAM Journal on Computing","title":"Approximation Algorithms for QMA-Complete Problems","publisher":"Society for Industrial & Applied Mathematics (SIAM)","date_created":"2019-03-01T12:04:03Z","year":"2012","issue":"4"},{"user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"_id":"8174","extern":"1","article_type":"original","type":"journal_article","status":"public","author":[{"orcid":"0000-0002-9992-3379","last_name":"Gharibian","id":"71541","full_name":"Gharibian, Sevag","first_name":"Sevag"}],"volume":86,"date_updated":"2023-02-28T11:03:38Z","oa":"1","main_file_link":[{"url":"https://arxiv.org/abs/1202.1598","open_access":"1"}],"doi":"10.1103/PhysRevA.86.042106","publication_status":"published","citation":{"short":"S. Gharibian, Physical Review A 86 (2012) 042106.","mla":"Gharibian, Sevag. “Quantifying Nonclassicality with Local Unitary Operations.” <i>Physical Review A</i>, vol. 86, American Physical Society, 2012, p. 042106, doi:<a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">10.1103/PhysRevA.86.042106</a>.","bibtex":"@article{Gharibian_2012, title={Quantifying nonclassicality with local unitary operations}, volume={86}, DOI={<a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">10.1103/PhysRevA.86.042106</a>}, journal={Physical Review A}, publisher={American Physical Society}, author={Gharibian, Sevag}, year={2012}, pages={042106} }","apa":"Gharibian, S. (2012). Quantifying nonclassicality with local unitary operations. <i>Physical Review A</i>, <i>86</i>, 042106. <a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">https://doi.org/10.1103/PhysRevA.86.042106</a>","ama":"Gharibian S. Quantifying nonclassicality with local unitary operations. <i>Physical Review A</i>. 2012;86:042106. doi:<a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">10.1103/PhysRevA.86.042106</a>","chicago":"Gharibian, Sevag. “Quantifying Nonclassicality with Local Unitary Operations.” <i>Physical Review A</i> 86 (2012): 042106. <a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">https://doi.org/10.1103/PhysRevA.86.042106</a>.","ieee":"S. Gharibian, “Quantifying nonclassicality with local unitary operations,” <i>Physical Review A</i>, vol. 86, p. 042106, 2012, doi: <a href=\"https://doi.org/10.1103/PhysRevA.86.042106\">10.1103/PhysRevA.86.042106</a>."},"page":"042106","intvolume":"        86","external_id":{"arxiv":["1202.1598"]},"language":[{"iso":"eng"}],"publication":"Physical Review A","abstract":[{"text":"We propose a measure of non-classical correlations in bipartite quantum states based on local unitary operations. We prove the measure is non-zero if and only if the quantum discord is non-zero; this is achieved via a new characterization of zero discord states in terms of the state's correlation matrix. Moreover, our scheme can be extended to ensure the same relationship holds even with a generalized version of quantum discord in which higher-rank projective measurements are allowed. We next derive a closed form expression for our scheme in the cases of Werner states and (2 x N)-dimensional systems. The latter reveals that for (2 x N)-dimensional states, our measure reduces to the geometric discord [Dakic et al., PRL 105, 2010]. A connection to the CHSH inequality is shown. We close with a characterization of all maximally non-classical, yet separable, (2 x N)-dimensional states of rank at most two (with respect to our measure).","lang":"eng"}],"date_created":"2019-03-01T12:01:41Z","publisher":"American Physical Society","title":"Quantifying nonclassicality with local unitary operations","year":"2012"},{"type":"conference","status":"public","department":[{"_id":"623"}],"user_id":"71124","series_title":"Phys. Rev. B","_id":"42031","language":[{"iso":"eng"}],"article_number":"121302","intvolume":"        83","citation":{"mla":"Plumhof, J. D., et al. <i>Strain-Induced Anticrossing of Bright Exciton Levels in Single Self-Assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs Quantum Dots</i>. 121302, 2011.","bibtex":"@article{Plumhof_ Krápek_Ding_Jöns_Hafenbrak_ Klenovský_Herklotz_ Dörr_ Michler _Rastelli,_et al._2011, series={Phys. Rev. B}, title={Strain-induced anticrossing of bright exciton levels in single self-assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs quantum dots}, volume={83}, number={121302}, author={Plumhof, J.D and  Krápek, V and Ding, F and Jöns, Klaus D. and Hafenbrak, R and  Klenovský, P and Herklotz, A and  Dörr, K and  Michler , P and Rastelli, A and et al.}, year={2011}, collection={Phys. Rev. B} }","short":"J.D. Plumhof, V.  Krápek, F. Ding, K.D. Jöns, R. Hafenbrak, P.  Klenovský, A. Herklotz, K.  Dörr, P.  Michler , A. Rastelli,, O.G. Schmidt, 83 (2011).","apa":"Plumhof, J. D.,  Krápek, V., Ding, F., Jöns, K. D., Hafenbrak, R.,  Klenovský, P., Herklotz, A.,  Dörr, K.,  Michler , P., Rastelli, A., &#38; Schmidt, O. G. (2011). <i>Strain-induced anticrossing of bright exciton levels in single self-assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs quantum dots</i> (No. 121302; Vol. 83).","ama":"Plumhof JD,  Krápek V, Ding F, et al. Strain-induced anticrossing of bright exciton levels in single self-assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs quantum dots. 2011;83.","chicago":"Plumhof, J.D, V  Krápek, F Ding, Klaus D. Jöns, R Hafenbrak, P  Klenovský, A Herklotz, et al. “Strain-Induced Anticrossing of Bright Exciton Levels in Single Self-Assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs Quantum Dots.” Phys. Rev. B, 2011.","ieee":"J. D. Plumhof <i>et al.</i>, “Strain-induced anticrossing of bright exciton levels in single self-assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs quantum dots,” vol. 83. 2011."},"year":"2011","volume":83,"date_created":"2023-02-13T08:26:54Z","author":[{"first_name":"J.D","full_name":"Plumhof, J.D","last_name":"Plumhof"},{"first_name":"V","last_name":" Krápek","full_name":" Krápek, V"},{"first_name":"F","full_name":"Ding, F","last_name":"Ding"},{"first_name":"Klaus D.","last_name":"Jöns","id":"85353","full_name":"Jöns, Klaus D."},{"first_name":"R","last_name":"Hafenbrak","full_name":"Hafenbrak, R"},{"first_name":"P","last_name":" Klenovský","full_name":" Klenovský, P"},{"full_name":"Herklotz, A","last_name":"Herklotz","first_name":"A"},{"first_name":"K","last_name":" Dörr","full_name":" Dörr, K"},{"first_name":"P","full_name":" Michler , P","last_name":" Michler "},{"last_name":"Rastelli,","full_name":"Rastelli,, A","first_name":"A"},{"full_name":"Schmidt, O.G","last_name":"Schmidt","first_name":"O.G"}],"date_updated":"2023-02-13T08:44:35Z","title":"Strain-induced anticrossing of bright exciton levels in single self-assembled GaAs/Al(x)Ga(1−x)As and In(x)Ga(1−x)As/GaAs quantum dots"},{"type":"conference","status":"public","_id":"42032","department":[{"_id":"623"}],"series_title":"Phys. Rev. Lett.","user_id":"71124","language":[{"iso":"eng"}],"year":"2011","intvolume":"       107","page":"217402","citation":{"ama":"Jöns KD,  Hafenbrak R, Singh R, et al. Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress. 2011;107:217402.","ieee":"K. D. Jöns <i>et al.</i>, “Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress,” vol. 107. p. 217402, 2011.","chicago":"Jöns, Klaus D., R  Hafenbrak, R Singh, F Ding, J.D  Plumhof, A Rastelli, O.G  Schmidt, G Bester, and P Michler. “Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress.” Phys. Rev. Lett., 2011.","short":"K.D. Jöns, R.  Hafenbrak, R. Singh, F. Ding, J.D.  Plumhof, A. Rastelli, O.G.  Schmidt, G. Bester, P. Michler, 107 (2011) 217402.","mla":"Jöns, Klaus D., et al. <i>Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress</i>. 2011, p. 217402.","bibtex":"@article{Jöns_ Hafenbrak_Singh_Ding_ Plumhof_Rastelli_ Schmidt_Bester_Michler_2011, series={Phys. Rev. Lett.}, title={Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress}, volume={107}, author={Jöns, Klaus D. and  Hafenbrak, R and Singh, R and Ding, F and  Plumhof, J.D and Rastelli, A and  Schmidt, O.G and Bester, G and Michler, P}, year={2011}, pages={217402}, collection={Phys. Rev. Lett.} }","apa":"Jöns, K. D.,  Hafenbrak, R., Singh, R., Ding, F.,  Plumhof, J. D., Rastelli, A.,  Schmidt, O. G., Bester, G., &#38; Michler, P. (2011). <i>Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress</i> (Vol. 107, p. 217402)."},"date_updated":"2023-02-13T08:44:28Z","volume":107,"author":[{"id":"85353","full_name":"Jöns, Klaus D.","last_name":"Jöns","first_name":"Klaus D."},{"first_name":"R","full_name":" Hafenbrak, R","last_name":" Hafenbrak"},{"full_name":"Singh, R","last_name":"Singh","first_name":"R"},{"last_name":"Ding","full_name":"Ding, F","first_name":"F"},{"last_name":" Plumhof","full_name":" Plumhof, J.D","first_name":"J.D"},{"first_name":"A","last_name":"Rastelli","full_name":"Rastelli, A"},{"first_name":"O.G","full_name":" Schmidt, O.G","last_name":" Schmidt"},{"full_name":"Bester, G","last_name":"Bester","first_name":"G"},{"last_name":"Michler","full_name":"Michler, P","first_name":"P"}],"date_created":"2023-02-13T08:31:47Z","title":"Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In(x)Ga(1−x)As/GaAs Quantum Dots on the Applied Uniaxial Stress"},{"year":"2011","issue":"07n08","title":"Characterizing Quantumness via Entanglement Creation","publisher":"World Scientific Pub Co Pte Lt","date_created":"2019-03-01T12:08:55Z","abstract":[{"text":"In [Piani et al., PRL106 (2011) 220403], an activation protocol was introduced which maps the general non-classical (multipartite) correlations between given systems into bipartite entanglement between the systems and local ancillae by means of a potentially highly entangling interaction. Here, we study how this activation protocol can be used to entangle the starting systems themselves via entanglement swapping through a measurement on the ancillae. Furthermore, we bound the relative entropy of quantumness (a naturally arising measure of non-classicality in the scheme of Piani et al. above) for a special class of separable states, the so-called classical–quantum states. In particular, we fully characterize the classical–quantum two-qubit states that are maximally non-classical.","lang":"eng"}],"publication":"International Journal of Quantum Information","language":[{"iso":"eng"}],"external_id":{"arxiv":["1105.3419"]},"citation":{"ieee":"S. Gharibian, M. PIANI, G. ADESSO, J. CALSAMIGLIA, and P. HORODECKI, “Characterizing Quantumness via Entanglement Creation,” <i>International Journal of Quantum Information</i>, vol. 09, no. 07n08, pp. 1701–1713, 2011, doi: <a href=\"https://doi.org/10.1142/s0219749911008258\">10.1142/s0219749911008258</a>.","chicago":"Gharibian, Sevag, MARCO PIANI, GERARDO ADESSO, JOHN CALSAMIGLIA, and PAWEŁ HORODECKI. “Characterizing Quantumness via Entanglement Creation.” <i>International Journal of Quantum Information</i> 09, no. 07n08 (2011): 1701–13. <a href=\"https://doi.org/10.1142/s0219749911008258\">https://doi.org/10.1142/s0219749911008258</a>.","ama":"Gharibian S, PIANI M, ADESSO G, CALSAMIGLIA J, HORODECKI P. Characterizing Quantumness via Entanglement Creation. <i>International Journal of Quantum Information</i>. 2011;09(07n08):1701-1713. doi:<a href=\"https://doi.org/10.1142/s0219749911008258\">10.1142/s0219749911008258</a>","mla":"Gharibian, Sevag, et al. “Characterizing Quantumness via Entanglement Creation.” <i>International Journal of Quantum Information</i>, vol. 09, no. 07n08, World Scientific Pub Co Pte Lt, 2011, pp. 1701–13, doi:<a href=\"https://doi.org/10.1142/s0219749911008258\">10.1142/s0219749911008258</a>.","short":"S. Gharibian, M. PIANI, G. ADESSO, J. CALSAMIGLIA, P. HORODECKI, International Journal of Quantum Information 09 (2011) 1701–1713.","bibtex":"@article{Gharibian_PIANI_ADESSO_CALSAMIGLIA_HORODECKI_2011, title={Characterizing Quantumness via Entanglement Creation}, volume={09}, DOI={<a href=\"https://doi.org/10.1142/s0219749911008258\">10.1142/s0219749911008258</a>}, number={07n08}, journal={International Journal of Quantum Information}, publisher={World Scientific Pub Co Pte Lt}, author={Gharibian, Sevag and PIANI, MARCO and ADESSO, GERARDO and CALSAMIGLIA, JOHN and HORODECKI, PAWEŁ}, year={2011}, pages={1701–1713} }","apa":"Gharibian, S., PIANI, M., ADESSO, G., CALSAMIGLIA, J., &#38; HORODECKI, P. (2011). Characterizing Quantumness via Entanglement Creation. <i>International Journal of Quantum Information</i>, <i>09</i>(07n08), 1701–1713. <a href=\"https://doi.org/10.1142/s0219749911008258\">https://doi.org/10.1142/s0219749911008258</a>"},"intvolume":"         9","page":"1701-1713","publication_status":"published","publication_identifier":{"issn":["0219-7499","1793-6918"]},"main_file_link":[{"url":"https://arxiv.org/abs/1105.3419","open_access":"1"}],"doi":"10.1142/s0219749911008258","date_updated":"2023-02-28T11:04:25Z","oa":"1","author":[{"first_name":"Sevag","last_name":"Gharibian","orcid":"0000-0002-9992-3379","id":"71541","full_name":"Gharibian, Sevag"},{"full_name":"PIANI, MARCO","last_name":"PIANI","first_name":"MARCO"},{"full_name":"ADESSO, GERARDO","last_name":"ADESSO","first_name":"GERARDO"},{"first_name":"JOHN","full_name":"CALSAMIGLIA, JOHN","last_name":"CALSAMIGLIA"},{"full_name":"HORODECKI, PAWEŁ","last_name":"HORODECKI","first_name":"PAWEŁ"}],"volume":"09","status":"public","type":"journal_article","article_type":"original","extern":"1","_id":"8178","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}]},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1101.3884"}],"conference":{"name":"2011 IEEE 26th Annual Conference on Computational Complexity (CCC)","location":"San Jose, USA"},"doi":"10.1109/ccc.2011.15","oa":"1","date_updated":"2023-02-28T11:04:02Z","author":[{"first_name":"Sevag","full_name":"Gharibian, Sevag","id":"71541","last_name":"Gharibian","orcid":"0000-0002-9992-3379"},{"last_name":"Kempe","full_name":"Kempe, Julia","first_name":"Julia"}],"citation":{"apa":"Gharibian, S., &#38; Kempe, J. (2011). Approximation Algorithms for QMA-Complete Problems. <i>IEEE Annual Conference on Computational Complexity (CCC 2011)</i>. 2011 IEEE 26th Annual Conference on Computational Complexity (CCC), San Jose, USA. <a href=\"https://doi.org/10.1109/ccc.2011.15\">https://doi.org/10.1109/ccc.2011.15</a>","bibtex":"@inproceedings{Gharibian_Kempe_2011, title={Approximation Algorithms for QMA-Complete Problems}, DOI={<a href=\"https://doi.org/10.1109/ccc.2011.15\">10.1109/ccc.2011.15</a>}, booktitle={IEEE Annual Conference on Computational Complexity (CCC 2011)}, publisher={IEEE}, author={Gharibian, Sevag and Kempe, Julia}, year={2011} }","mla":"Gharibian, Sevag, and Julia Kempe. “Approximation Algorithms for QMA-Complete Problems.” <i>IEEE Annual Conference on Computational Complexity (CCC 2011)</i>, IEEE, 2011, doi:<a href=\"https://doi.org/10.1109/ccc.2011.15\">10.1109/ccc.2011.15</a>.","short":"S. Gharibian, J. Kempe, in: IEEE Annual Conference on Computational Complexity (CCC 2011), IEEE, 2011.","ama":"Gharibian S, Kempe J. Approximation Algorithms for QMA-Complete Problems. In: <i>IEEE Annual Conference on Computational Complexity (CCC 2011)</i>. IEEE; 2011. doi:<a href=\"https://doi.org/10.1109/ccc.2011.15\">10.1109/ccc.2011.15</a>","chicago":"Gharibian, Sevag, and Julia Kempe. “Approximation Algorithms for QMA-Complete Problems.” In <i>IEEE Annual Conference on Computational Complexity (CCC 2011)</i>. IEEE, 2011. <a href=\"https://doi.org/10.1109/ccc.2011.15\">https://doi.org/10.1109/ccc.2011.15</a>.","ieee":"S. Gharibian and J. Kempe, “Approximation Algorithms for QMA-Complete Problems,” presented at the 2011 IEEE 26th Annual Conference on Computational Complexity (CCC), San Jose, USA, 2011, doi: <a href=\"https://doi.org/10.1109/ccc.2011.15\">10.1109/ccc.2011.15</a>."},"publication_status":"published","publication_identifier":{"isbn":["9781457701795"]},"extern":"1","_id":"8176","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"status":"public","type":"conference","title":"Approximation Algorithms for QMA-Complete Problems","publisher":"IEEE","date_created":"2019-03-01T12:06:18Z","year":"2011","language":[{"iso":"eng"}],"external_id":{"arxiv":["1101.3884"]},"abstract":[{"text":"Approximation algorithms for classical constraint satisfaction problems are one of the main research areas in theoretical computer science. Here we define a natural approximation version of the QMA-complete local Hamiltonian problem and initiate its study. We present two main results. The first shows that a non-trivial approximation ratio can be obtained in the class NP using product states. The second result (which builds on the first one), gives a polynomial time (classical) algorithm providing a similar approximation ratio for dense instances of the problem. The latter result is based on an adaptation of the \"exhaustive sampling method\" by Arora et al. [J. Comp. Sys. Sci. 58, p.193 (1999)] to the quantum setting, and might be of independent interest.","lang":"eng"}],"publication":"IEEE Annual Conference on Computational Complexity (CCC 2011)"},{"department":[{"_id":"623"},{"_id":"7"}],"user_id":"71541","_id":"8177","extern":"1","article_type":"original","type":"journal_article","status":"public","volume":106,"author":[{"first_name":"Marco","full_name":"Piani, Marco","last_name":"Piani"},{"first_name":"Sevag","id":"71541","full_name":"Gharibian, Sevag","last_name":"Gharibian","orcid":"0000-0002-9992-3379"},{"first_name":"Gerardo","full_name":"Adesso, Gerardo","last_name":"Adesso"},{"first_name":"John","last_name":"Calsamiglia","full_name":"Calsamiglia, John"},{"full_name":"Horodecki, Paweł","last_name":"Horodecki","first_name":"Paweł"},{"full_name":"Winter, Andreas","last_name":"Winter","first_name":"Andreas"}],"date_updated":"2023-02-28T11:04:13Z","oa":"1","doi":"10.1103/physrevlett.106.220403","main_file_link":[{"url":"https://arxiv.org/abs/1103.4032","open_access":"1"}],"publication_identifier":{"issn":["0031-9007","1079-7114"]},"publication_status":"published","intvolume":"       106","citation":{"short":"M. Piani, S. Gharibian, G. Adesso, J. Calsamiglia, P. Horodecki, A. Winter, Physical Review Letters 106 (2011).","mla":"Piani, Marco, et al. “All Nonclassical Correlations Can Be Activated into Distillable Entanglement.” <i>Physical Review Letters</i>, vol. 106, no. 22, American Physical Society (APS), 2011, doi:<a href=\"https://doi.org/10.1103/physrevlett.106.220403\">10.1103/physrevlett.106.220403</a>.","bibtex":"@article{Piani_Gharibian_Adesso_Calsamiglia_Horodecki_Winter_2011, title={All Nonclassical Correlations Can Be Activated into Distillable Entanglement}, volume={106}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.106.220403\">10.1103/physrevlett.106.220403</a>}, number={22}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Piani, Marco and Gharibian, Sevag and Adesso, Gerardo and Calsamiglia, John and Horodecki, Paweł and Winter, Andreas}, year={2011} }","apa":"Piani, M., Gharibian, S., Adesso, G., Calsamiglia, J., Horodecki, P., &#38; Winter, A. (2011). All Nonclassical Correlations Can Be Activated into Distillable Entanglement. <i>Physical Review Letters</i>, <i>106</i>(22). <a href=\"https://doi.org/10.1103/physrevlett.106.220403\">https://doi.org/10.1103/physrevlett.106.220403</a>","chicago":"Piani, Marco, Sevag Gharibian, Gerardo Adesso, John Calsamiglia, Paweł Horodecki, and Andreas Winter. “All Nonclassical Correlations Can Be Activated into Distillable Entanglement.” <i>Physical Review Letters</i> 106, no. 22 (2011). <a href=\"https://doi.org/10.1103/physrevlett.106.220403\">https://doi.org/10.1103/physrevlett.106.220403</a>.","ieee":"M. Piani, S. Gharibian, G. Adesso, J. Calsamiglia, P. Horodecki, and A. Winter, “All Nonclassical Correlations Can Be Activated into Distillable Entanglement,” <i>Physical Review Letters</i>, vol. 106, no. 22, 2011, doi: <a href=\"https://doi.org/10.1103/physrevlett.106.220403\">10.1103/physrevlett.106.220403</a>.","ama":"Piani M, Gharibian S, Adesso G, Calsamiglia J, Horodecki P, Winter A. All Nonclassical Correlations Can Be Activated into Distillable Entanglement. <i>Physical Review Letters</i>. 2011;106(22). doi:<a href=\"https://doi.org/10.1103/physrevlett.106.220403\">10.1103/physrevlett.106.220403</a>"},"external_id":{"arxiv":["1103.4032"]},"language":[{"iso":"eng"}],"publication":"Physical Review Letters","abstract":[{"text":"We devise a protocol in which general nonclassical multipartite correlations produce a physically relevant effect, leading to the creation of bipartite entanglement. In particular, we show that the relative entropy of quantumness, which measures all nonclassical correlations among subsystems of a quantum system, is equivalent to and can be operationally interpreted as the minimum distillable entanglement generated between the system and local ancillae in our protocol. We emphasize the key role of state mixedness in maximizing nonclassicality: Mixed entangled states can be arbitrarily more nonclassical than separable and pure entangled states.","lang":"eng"}],"date_created":"2019-03-01T12:07:49Z","publisher":"American Physical Society (APS)","title":"All Nonclassical Correlations Can Be Activated into Distillable Entanglement","issue":"22","year":"2011"},{"_id":"42030","user_id":"71124","series_title":"Nanotechnology ","department":[{"_id":"623"}],"article_number":"125606 ","language":[{"iso":"eng"}],"type":"conference","status":"public","date_updated":"2023-02-13T08:44:48Z","date_created":"2023-02-13T08:19:11Z","author":[{"first_name":"D","full_name":" Richter, D","last_name":" Richter"},{"full_name":"Hafenbrak, R","last_name":"Hafenbrak","first_name":"R"},{"id":"85353","full_name":"Jöns, Klaus D.","last_name":"Jöns","first_name":"Klaus D."},{"full_name":"Schulz, W-M","last_name":"Schulz","first_name":"W-M"},{"first_name":"M","last_name":"Eichfelder","full_name":"Eichfelder, M"},{"first_name":"M","full_name":"Heldmaier, M","last_name":"Heldmaier"},{"first_name":"R","last_name":"Roßbach","full_name":"Roßbach, R"},{"full_name":"Jetter, M","last_name":"Jetter","first_name":"M"},{"last_name":"Michler","full_name":"Michler, P","first_name":"P"}],"volume":21,"title":"Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths","year":"2010","citation":{"ama":"Richter D, Hafenbrak R, Jöns KD, et al. Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths. 2010;21.","ieee":"D.  Richter <i>et al.</i>, “Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths,” vol. 21. 2010.","chicago":"Richter, D, R Hafenbrak, Klaus D. Jöns, W-M Schulz, M Eichfelder, M Heldmaier, R Roßbach, M Jetter, and P Michler. “Low-Density MOVPE Grown InGaAs QDs Exhibiting Ultra-Narrow Single Exciton Linewidths.” Nanotechnology , 2010.","short":"D.  Richter, R. Hafenbrak, K.D. Jöns, W.-M. Schulz, M. Eichfelder, M. Heldmaier, R. Roßbach, M. Jetter, P. Michler, 21 (2010).","mla":"Richter, D., et al. <i>Low-Density MOVPE Grown InGaAs QDs Exhibiting Ultra-Narrow Single Exciton Linewidths</i>. 125606, 2010.","bibtex":"@article{ Richter_Hafenbrak_Jöns_Schulz_Eichfelder_Heldmaier_Roßbach_Jetter_Michler_2010, series={Nanotechnology }, title={Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths}, volume={21}, number={125606}, author={ Richter, D and Hafenbrak, R and Jöns, Klaus D. and Schulz, W-M and Eichfelder, M and Heldmaier, M and Roßbach, R and Jetter, M and Michler, P}, year={2010}, collection={Nanotechnology } }","apa":"Richter, D., Hafenbrak, R., Jöns, K. D., Schulz, W.-M., Eichfelder, M., Heldmaier, M., Roßbach, R., Jetter, M., &#38; Michler, P. (2010). <i>Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths</i> (No. 125606; Vol. 21)."},"intvolume":"        21"},{"issue":"3{\\&}4","year":"2010","date_created":"2019-03-01T12:09:59Z","title":"Strong NP-hardness of the quantum separability problem","publication":"Quantum Information & Computation","abstract":[{"lang":"eng","text":"Given the density matrix rho of a bipartite quantum state, the quantum separability problem asks whether rho is entangled or separable. In 2003, Gurvits showed that this problem is NP-hard if rho is located within an inverse exponential (with respect to dimension) distance from the border of the set of separable quantum states. In this paper, we extend this NP-hardness to an inverse polynomial distance from the separable set. The result follows from a simple combination of works by Gurvits, Ioannou, and Liu. We apply our result to show (1) an immediate lower bound on the maximum distance between a bound entangled state and the separable set (assuming P != NP), and (2) NP-hardness for the problem of determining whether a completely positive trace-preserving linear map is entanglement-breaking."}],"external_id":{"arxiv":["0810.4507"]},"language":[{"iso":"eng"}],"publication_status":"published","citation":{"bibtex":"@article{Gharibian_2010, title={Strong NP-hardness of the quantum separability problem}, volume={10}, number={3{\\ &#38; }4}, journal={Quantum Information &#38; Computation}, author={Gharibian, Sevag}, year={2010}, pages={343–360} }","short":"S. Gharibian, Quantum Information &#38; Computation 10 (2010) 343–360.","mla":"Gharibian, Sevag. “Strong NP-Hardness of the Quantum Separability Problem.” <i>Quantum Information &#38; Computation</i>, vol. 10, no. 3{\\ &#38; }4, 2010, pp. 343–60.","apa":"Gharibian, S. (2010). Strong NP-hardness of the quantum separability problem. <i>Quantum Information &#38; Computation</i>, <i>10</i>(3{\\ &#38; }4), 343–360.","ama":"Gharibian S. Strong NP-hardness of the quantum separability problem. <i>Quantum Information &#38; Computation</i>. 2010;10(3{\\ &#38; }4):343-360.","chicago":"Gharibian, Sevag. “Strong NP-Hardness of the Quantum Separability Problem.” <i>Quantum Information &#38; Computation</i> 10, no. 3{\\ &#38; }4 (2010): 343–60.","ieee":"S. Gharibian, “Strong NP-hardness of the quantum separability problem,” <i>Quantum Information &#38; Computation</i>, vol. 10, no. 3{\\ &#38; }4, pp. 343–360, 2010."},"page":"343-360","intvolume":"        10","date_updated":"2023-02-28T11:04:38Z","oa":"1","author":[{"first_name":"Sevag","id":"71541","full_name":"Gharibian, Sevag","orcid":"0000-0002-9992-3379","last_name":"Gharibian"}],"volume":10,"main_file_link":[{"url":"https://arxiv.org/abs/0810.4507","open_access":"1"}],"type":"journal_article","status":"public","_id":"8179","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"article_type":"original","extern":"1"},{"type":"journal_article","status":"public","user_id":"71541","department":[{"_id":"623"},{"_id":"7"}],"_id":"8180","extern":"1","article_type":"original","publication_status":"published","citation":{"ieee":"S. Gharibian, H. Kampermann, and D. Bru{\\ss}, “On global effects caused by locally noneffective unitary operations,” <i>Quantum Information &#38; Computation</i>, vol. 9, no. 11, pp. 1013–1029, 2009.","chicago":"Gharibian, Sevag, Hermann Kampermann, and Dagmar Bru{\\ss}. “On Global Effects Caused by Locally Noneffective Unitary Operations.” <i>Quantum Information &#38; Computation</i> 9, no. 11 (2009): 1013–29.","ama":"Gharibian S, Kampermann H, Bru{\\ss} D. On global effects caused by locally noneffective unitary operations. <i>Quantum Information &#38; Computation</i>. 2009;9(11):1013-1029.","apa":"Gharibian, S., Kampermann, H., &#38; Bru{\\ss}, D. (2009). On global effects caused by locally noneffective unitary operations. <i>Quantum Information &#38; Computation</i>, <i>9</i>(11), 1013–1029.","short":"S. Gharibian, H. Kampermann, D. Bru{\\ss}, Quantum Information &#38; Computation 9 (2009) 1013–1029.","mla":"Gharibian, Sevag, et al. “On Global Effects Caused by Locally Noneffective Unitary Operations.” <i>Quantum Information &#38; Computation</i>, vol. 9, no. 11, 2009, pp. 1013–29.","bibtex":"@article{Gharibian_Kampermann_Bru{\\ss}_2009, title={On global effects caused by locally noneffective unitary operations}, volume={9}, number={11}, journal={Quantum Information &#38; Computation}, author={Gharibian, Sevag and Kampermann, Hermann and Bru{\\ss}, Dagmar}, year={2009}, pages={1013–1029} }"},"page":"1013-1029","intvolume":"         9","author":[{"orcid":"0000-0002-9992-3379","last_name":"Gharibian","id":"71541","full_name":"Gharibian, Sevag","first_name":"Sevag"},{"full_name":"Kampermann, Hermann","last_name":"Kampermann","first_name":"Hermann"},{"first_name":"Dagmar","full_name":"Bru{\\ss}, Dagmar","last_name":"Bru{\\ss}"}],"volume":9,"date_updated":"2023-02-28T11:04:50Z","oa":"1","main_file_link":[{"url":"https://arxiv.org/abs/0809.4469","open_access":"1"}],"publication":"Quantum Information & Computation","abstract":[{"lang":"eng","text":"Given a bipartite quantum state rho with subsystems A and B of arbitrary dimensions, we study the entanglement detecting capabilities of locally noneffective, or cyclic, unitary operations [L. B. Fu, Europhys. Lett., vol. 75, pp. 1-7, 2006]. Local cyclic unitaries have the special property that they leave their target subsystem invariant. We investigate the distance between rho and the global state after local application of such unitaries as a possible indicator of entanglement. To this end, we derive and discuss closed formulae for the maximal such distance achievable for three cases of interest: (pseudo)pure quantum states, Werner states, and two-qubit states. What makes this criterion interesting, as we show here, is that it surprisingly displays behavior similar to recent anomalies observed for non-locality measures in higher dimensions, as well as demonstrates an equivalence to the CHSH inequality for certain classes of two-qubit states. Yet, despite these similarities, the criterion is not itself a non-locality measure. We also consider entanglement detection in bound entangled states."}],"external_id":{"arxiv":["0809.4469"]},"language":[{"iso":"eng"}],"issue":"11","year":"2009","date_created":"2019-03-01T12:12:13Z","title":"On global effects caused by locally noneffective unitary operations"},{"language":[{"iso":"eng"}],"external_id":{"arxiv":["0811.4003"]},"abstract":[{"lang":"eng","text":"We investigate signatures of non-classicality in quantum states, in particular, those involved in the DQC1 model of mixed-state quantum computation [Phys. Rev. Lett. 81, 5672 (1998)]. To do so, we consider two known non-classicality criteria. The first quantifies disturbance of a quantum state under locally noneffective unitary operations (LNU), which are local unitaries acting invariantly on a subsystem. The second quantifies measurement induced disturbance (MID) in the eigenbasis of the reduced density matrices. We study the role of both figures of non-classicality in the exponential speedup of the DQC1 model and compare them vis-a-vis the interpretation provided in terms of quantum discord. In particular, we prove that a non-zero quantum discord implies a non-zero shift under LNUs. We also use the MID measure to study the locking of classical correlations [Phys. Rev. Lett. 92, 067902 (2004)] using two mutually unbiased bases (MUB). We find the MID measure to exactly correspond to the number of locked bits of correlation. For three or more MUBs, it predicts the possibility of superior locking effects."}],"publication":"Physical Review A","title":"Signatures of nonclassicality in mixed-state quantum computation","publisher":"American Physical Society (APS)","date_created":"2019-03-01T12:12:58Z","year":"2009","issue":"4","article_type":"original","extern":"1","_id":"8181","department":[{"_id":"623"},{"_id":"7"}],"user_id":"71541","status":"public","type":"journal_article","doi":"10.1103/physreva.79.042325","main_file_link":[{"url":"https://arxiv.org/abs/0811.4003","open_access":"1"}],"oa":"1","date_updated":"2023-02-28T11:05:02Z","volume":79,"author":[{"full_name":"Datta, Animesh","last_name":"Datta","first_name":"Animesh"},{"full_name":"Gharibian, Sevag","id":"71541","orcid":"0000-0002-9992-3379","last_name":"Gharibian","first_name":"Sevag"}],"intvolume":"        79","citation":{"ama":"Datta A, Gharibian S. Signatures of nonclassicality in mixed-state quantum computation. <i>Physical Review A</i>. 2009;79(4). doi:<a href=\"https://doi.org/10.1103/physreva.79.042325\">10.1103/physreva.79.042325</a>","chicago":"Datta, Animesh, and Sevag Gharibian. “Signatures of Nonclassicality in Mixed-State Quantum Computation.” <i>Physical Review A</i> 79, no. 4 (2009). <a href=\"https://doi.org/10.1103/physreva.79.042325\">https://doi.org/10.1103/physreva.79.042325</a>.","ieee":"A. Datta and S. Gharibian, “Signatures of nonclassicality in mixed-state quantum computation,” <i>Physical Review A</i>, vol. 79, no. 4, 2009, doi: <a href=\"https://doi.org/10.1103/physreva.79.042325\">10.1103/physreva.79.042325</a>.","short":"A. Datta, S. Gharibian, Physical Review A 79 (2009).","mla":"Datta, Animesh, and Sevag Gharibian. “Signatures of Nonclassicality in Mixed-State Quantum Computation.” <i>Physical Review A</i>, vol. 79, no. 4, American Physical Society (APS), 2009, doi:<a href=\"https://doi.org/10.1103/physreva.79.042325\">10.1103/physreva.79.042325</a>.","bibtex":"@article{Datta_Gharibian_2009, title={Signatures of nonclassicality in mixed-state quantum computation}, volume={79}, DOI={<a href=\"https://doi.org/10.1103/physreva.79.042325\">10.1103/physreva.79.042325</a>}, number={4}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Datta, Animesh and Gharibian, Sevag}, year={2009} }","apa":"Datta, A., &#38; Gharibian, S. (2009). Signatures of nonclassicality in mixed-state quantum computation. <i>Physical Review A</i>, <i>79</i>(4). <a href=\"https://doi.org/10.1103/physreva.79.042325\">https://doi.org/10.1103/physreva.79.042325</a>"},"publication_identifier":{"issn":["1050-2947","1094-1622"]},"publication_status":"published"}]