@inproceedings{8426, abstract = {{A central tenet of theoretical cryptography is the study of the minimal assumptions required to implement a given cryptographic primitive. One such primitive is the one-time memory (OTM), introduced by Goldwasser, Kalai, and Rothblum [CRYPTO 2008], which is a classical functionality modeled after a non-interactive 1-out-of-2 oblivious transfer, and which is complete for one-time classical and quantum programs. It is known that secure OTMs do not exist in the standard model in both the classical and quantum settings. Here, we propose a scheme for using quantum information, together with the assumption of stateless (i.e., reusable) hardware tokens, to build statistically secure OTMs. Via the semidefinite programming-based quantum games framework of Gutoski and Watrous [STOC 2007], we prove security for a malicious receiver, against a linear number of adaptive queries to the token, in the quantum universal composability framework. We prove stand-alone security against a malicious sender, but leave open the question of composable security against a malicious sender, as well as security against a malicious receiver making a polynomial number of adaptive queries. Compared to alternative schemes derived from the literature on quantum money, our scheme is technologically simple since it is of the "prepare-and measure" type. We also show our scheme is "tight" according to two scenarios.}}, author = {{Broadbent, Anne and Gharibian, Sevag and Zhou, Hong-Sheng}}, booktitle = {{Proceedings of the 15th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC)}}, pages = {{6:1--6:25}}, publisher = {{Leibniz International Proceedings in Informatics (LIPIcs)}}, title = {{{Towards Quantum One-Time Memories from Stateless Hardware}}}, volume = {{158}}, year = {{2020}}, } @article{16927, author = {{Gharibian, Sevag and Aldi, Marco and de Beaudrap, Niel and Saeedi, Seyran}}, journal = {{Communications in Mathematical Physics}}, title = {{{On efficiently solvable cases of Quantum k-SAT}}}, year = {{2020}}, } @article{40233, author = {{Meier, Lukas and Braun, Christian and Hannappel, Thomas and Schmidt, Wolf Gero}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{2}}, publisher = {{Wiley}}, title = {{{Band Alignment at Ga x In 1– x P/Al y In 1– y P Alloy Interfaces from Hybrid Density Functional Theory Calculations}}}, doi = {{10.1002/pssb.202000463}}, volume = {{258}}, year = {{2020}}, } @article{17067, author = {{Speiser, Eugen and Esser, Norbert and Halbig, Benedikt and Geurts, Jean and Schmidt, Wolf Gero and Sanna, Simone}}, issn = {{0167-5729}}, journal = {{Surface Science Reports}}, number = {{1}}, title = {{{Vibrational Raman spectroscopy on adsorbate-induced low-dimensional surface structures}}}, doi = {{10.1016/j.surfrep.2020.100480}}, volume = {{75}}, year = {{2020}}, } @article{26294, author = {{Sperling, Jan and Phillips, D. S. and Bulmer, J. F. F and Thekkadath, G. S. and Eckstein, A. and Wolterink, T. A. W. and Lugani, J. and Nam, S. W. and Lita, A. and Gerrits, T. and Vogel, W. and Agarwal, G. S. and Silberhorn, Christine and Walmsley, I. A.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, title = {{{Detector-Agnostic Phase-Space Distributions}}}, doi = {{10.1103/physrevlett.124.013605}}, year = {{2020}}, } @article{21023, author = {{Engelkemeier, M. and Lorz, L. and De, Syamsundar and Brecht, Benjamin and Dhand, I. and Plenio, M. B. and Silberhorn, Christine and Sperling, Jan}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, title = {{{Quantum photonics with active feedback loops}}}, doi = {{10.1103/physreva.102.023712}}, volume = {{102}}, year = {{2020}}, } @article{26289, author = {{Nitsche, Thomas and De, Syamsundar and Barkhofen, Sonja and Meyer-Scott, Evan and Tiedau, Johannes and Sperling, Jan and Gábris, Aurél and Jex, Igor and Silberhorn, Christine}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, title = {{{Local Versus Global Two-Photon Interference in Quantum Networks}}}, doi = {{10.1103/physrevlett.125.213604}}, year = {{2020}}, } @article{40435, abstract = {{

Coulomb binding energy is reduced when a few-molecule integer charge transfer complex (ICTC) is formed.

}}, author = {{Dong, Chuan-Ding and Schumacher, Stefan}}, issn = {{2050-7526}}, journal = {{Journal of Materials Chemistry C}}, keywords = {{Materials Chemistry, General Chemistry}}, number = {{34}}, pages = {{11929--11935}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Molecular doping in few-molecule polymer-dopant complexes shows reduced Coulomb binding}}}, doi = {{10.1039/d0tc02185g}}, volume = {{8}}, year = {{2020}}, } @article{20582, author = {{Berger, Bernd and Schmidt, Daniel and Ma, Xuekai and Schumacher, Stefan and Schneider, Christian and Höfling, Sven and Assmann, Marc}}, journal = {{Physical Review B}}, number = {{24}}, pages = {{245309}}, publisher = {{American Physical Society}}, title = {{{Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping}}}, doi = {{10.1103/PhysRevB.101.245309}}, volume = {{101}}, year = {{2020}}, } @article{40443, author = {{Pukrop, Matthias and Schumacher, Stefan}}, issn = {{2470-0045}}, journal = {{Physical Review E}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Externally controlled Lotka-Volterra dynamics in a linearly polarized polariton fluid}}}, doi = {{10.1103/physreve.101.012207}}, volume = {{101}}, year = {{2020}}, } @article{19190, abstract = {{Polarons in dielectric crystals play a crucial role for applications in integrated electronics and optoelectronics. In this work, we use density-functional theory and Green's function methods to explore the microscopic structure and spectroscopic signatures of electron polarons in lithium niobate (LiNbO3). Total-energy calculations and the comparison of calculated electron paramagnetic resonance data with available measurements reveal the formation of bound polarons at Nb_Li antisite defects with a quasi-Jahn-Teller distorted, tilted configuration. The defect-formation energies further indicate that (bi)polarons may form not only at Nb_Li antisites but also at structures where the antisite Nb atom moves into a neighboring empty oxygen octahedron. Based on these structure models, and on the calculated charge-transition levels and potential-energy barriers, we propose two mechanisms for the optical and thermal splitting of bipolarons, which provide a natural explanation for the reported two-path recombination of bipolarons. Optical-response calculations based on the Bethe-Salpeter equation, in combination with available experimental data and new measurements of the optical absorption spectrum, further corroborate the geometries proposed here for free and defect-bound (bi)polarons.}}, author = {{Schmidt, Falko and Kozub, Agnieszka L. and Biktagirov, Timur and Eigner, Christof and Silberhorn, Christine and Schindlmayr, Arno and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, number = {{4}}, publisher = {{American Physical Society}}, title = {{{Free and defect-bound (bi)polarons in LiNbO3: Atomic structure and spectroscopic signatures from ab initio calculations}}}, doi = {{10.1103/PhysRevResearch.2.043002}}, volume = {{2}}, year = {{2020}}, } @article{17066, author = {{Aldahhak, Hazem and Powroźnik, Paulina and Pander, Piotr and Jakubik, Wiesław and Dias, Fernando B. and Schmidt, Wolf Gero and Gerstmann, Uwe and Krzywiecki, Maciej}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, number = {{124}}, pages = {{6090--6102}}, title = {{{Toward Efficient Toxic-Gas Detectors: Exploring Molecular Interactions of Sarin and Dimethyl Methylphosphonate with Metal-Centered Phthalocyanine Structures}}}, doi = {{10.1021/acs.jpcc.9b11116}}, year = {{2020}}, } @article{17069, author = {{Biktagirov, Timur and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, number = {{2}}, title = {{{Spin decontamination for magnetic dipolar coupling calculations: Application to high-spin molecules and solid-state spin qubits}}}, doi = {{10.1103/physrevresearch.2.022024}}, volume = {{2}}, year = {{2020}}, } @article{19194, author = {{Biktagirov, Timur and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, title = {{{Spin decontamination for magnetic dipolar coupling calculations: Application to high-spin molecules and solid-state spin qubits}}}, doi = {{10.1103/physrevresearch.2.022024}}, year = {{2020}}, } @article{19193, author = {{Niederhausen, Jens and MacQueen, Rowan W. and Lips, Klaus and Aldahhak, Hazem and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{0743-7463}}, journal = {{Langmuir}}, pages = {{9099--9113}}, title = {{{Tetracene Ultrathin Film Growth on Hydrogen-Passivated Silicon}}}, doi = {{10.1021/acs.langmuir.0c01154}}, year = {{2020}}, } @article{19654, author = {{Krenz, Marvin and Gerstmann, Uwe and Schmidt, Wolf Gero}}, issn = {{2470-1343}}, journal = {{ACS Omega}}, pages = {{24057--24063}}, title = {{{Photochemical Ring Opening of Oxirane Modeled by Constrained Density Functional Theory}}}, doi = {{10.1021/acsomega.0c03483}}, year = {{2020}}, } @article{22883, author = {{Zuo, R and Song, X and Meier, Torsten and Yang, W}}, issn = {{1742-6588}}, journal = {{Journal of Physics: Conference Series}}, number = {{8}}, title = {{{Carrier-wave population transfer in semiconductors}}}, doi = {{10.1088/1742-6596/1412/8/082005}}, volume = {{1412}}, year = {{2020}}, } @article{40438, abstract = {{Semiconductor microcavities are frequently studied in the context of semiconductor lasers and in application-oriented fundamental research on topics such as linear and nonlinear polariton systems, polariton lasers, polariton pattern formation, and polaritonic Bose–Einstein condensates. A commonly used approach to describe theoretical properties includes a phenomenological single-mode equation that complements the equation for the nonlinear optical response (interband polarization) of the semiconductor. Here, we show how to replace the single-mode equation by a fully predictive transfer function method that, in contrast to the single-mode equation, accounts for propagation, retardation, and pulse-filtering effects of the incident light field traversing the distributed Bragg reflector (DBR) mirrors, without substantially increasing the numerical complexity of the solution. As examples, we use cavities containing GaAs quantum wells and transition-metal dichalcogenides (TMDs).}}, author = {{Carcamo, M. and Schumacher, Stefan and Binder, R.}}, issn = {{1559-128X}}, journal = {{Applied Optics}}, keywords = {{Atomic and Molecular Physics, and Optics, Engineering (miscellaneous), Electrical and Electronic Engineering}}, number = {{22}}, publisher = {{Optica Publishing Group}}, title = {{{Transfer function replacement of phenomenological single-mode equations in semiconductor microcavity modeling}}}, doi = {{10.1364/ao.392014}}, volume = {{59}}, year = {{2020}}, } @article{17070, abstract = {{

EPR spectroscopy reveals the universality class and dynamic effects of the [NH4][Zn(HCOO)3] hybrid formate framework.

}}, author = {{Navickas, Marius and Giriūnas, Laisvydas and Kalendra, Vidmantas and Biktagirov, Timur and Gerstmann, Uwe and Schmidt, Wolf Gero and Mączka, Mirosław and Pöppl, Andreas and Banys, Jūras and Šimėnas, Mantas}}, issn = {{1463-9076}}, journal = {{Physical Chemistry Chemical Physics}}, pages = {{8513--8521}}, title = {{{Electron paramagnetic resonance study of ferroelectric phase transition and dynamic effects in a Mn2+ doped [NH4][Zn(HCOO)3] hybrid formate framework}}}, doi = {{10.1039/d0cp01612h}}, volume = {{22}}, year = {{2020}}, } @article{19189, abstract = {{Density-functional theory calculations of (TiO2)n clusters (n = 1–5) in the gas phase and adsorbed on pristine graphene as well as graphene quantum dots are presented. The cluster adsorption is found to be dominated by van der Waals forces. The electronic structure and in particular the excitation energies of the bare clusters and the TiO2/graphene composites are found to vary largely in dependence on the size of the respective constituents. This holds in particular for the energy and the spatial localization of the highest occupied and lowest unoccupied molecular orbitals. In addition to a substantial gap narrowing, a pronounced separation of photoexcited electrons and holes is predicted in some instances. This is expected to prolong the lifetime of photoexcited carriers. Altogether, TiO2/graphene composites are predicted to be promising photocatalysts with improved electronic and photocatalytic properties compared to bulk TiO2.}}, author = {{Badalov, Sabuhi and Wilhelm, René and Schmidt, Wolf Gero}}, issn = {{0192-8651}}, journal = {{Journal of Computational Chemistry}}, pages = {{1921--1930}}, publisher = {{Willey}}, title = {{{Photocatalytic properties of graphene‐supported titania clusters from density‐functional theory}}}, doi = {{10.1002/jcc.26363}}, year = {{2020}}, }