TY - JOUR
AU - Riabinin, Matvei
AU - Sharapova, Polina
AU - Bartley, Tim
AU - Meier, Torsten
ID - 21547
IS - 4
JF - Journal of Physics Communications
SN - 2399-6528
TI - Generating two-mode squeezing with multimode measurement-induced nonlinearity
VL - 5
ER -
TY - JOUR
AU - Krauss-Kodytek, L.
AU - Hannes, Wolf-Rüdiger
AU - Meier, Torsten
AU - Ruppert, C.
AU - Betz, M.
ID - 23472
IS - 8
JF - Physical Review B
SN - 2469-9950
TI - Nondegenerate two-photon absorption in ZnSe: Experiment and theory
VL - 104
ER -
TY - JOUR
AU - Zuo, R
AU - Song, X
AU - Meier, Torsten
AU - Yang, W
ID - 22883
IS - 8
JF - Journal of Physics: Conference Series
SN - 1742-6588
TI - Carrier-wave population transfer in semiconductors
VL - 1412
ER -
TY - JOUR
AB - AbstractSemiconductor quantum dots are excellent candidates for ultrafast coherent manipulation of qubits by laser pulses on picosecond timescales or even faster. In inhomogeneous ensembles a macroscopic optical polarization decays rapidly due to dephasing, which, however, is reversible in photon echoes carrying complete information about the coherent ensemble dynamics. Control of the echo emission time is mandatory for applications. Here, we propose a concept to reach this goal. In a two-pulse photon echo sequence, we apply an additional resonant control pulse with multiple of 2π area. Depending on its arrival time, the control slows down dephasing or rephasing of the exciton ensemble during its action. We demonstrate for self-assembled (In,Ga)As quantum dots that the photon echo emission time can be retarded or advanced by up to 5 ps relative to its nominal appearance time without control. This versatile protocol may be used to obtain significantly longer temporal shifts for suitably tailored control pulses.
AU - Kosarev, Alexander N.
AU - Rose, Hendrik
AU - Poltavtsev, Sergey V.
AU - Reichelt, Matthias
AU - Schneider, Christian
AU - Kamp, Martin
AU - Höfling, Sven
AU - Bayer, Manfred
AU - Meier, Torsten
AU - Akimov, Ilya A.
ID - 20773
IS - 1
JF - Communications Physics
SN - 2399-3650
TI - Accurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dots
VL - 3
ER -
TY - JOUR
AB - Vortices are topological objects representing the circular motion of a fluid. With their additional degree of freedom, the vorticity, they have been widely investigated in many physical systems and different materials for fundamental interest and for applications in data storage and information processing. Vortices have also been observed in non-equilibrium exciton-polariton condensates in planar semiconductor microcavities. There they appear spontaneously or can be created and pinned in space using ring-shaped optical excitation profiles. However, using the vortex state for information processing not only requires creation of a vortex but also efficient control over the vortex after its creation. Here we demonstrate a simple approach to control and switch a localized polariton vortex between opposite states. In our scheme, both the optical control of vorticity and its detection through the orbital angular momentum of the emitted light are implemented in a robust and practical manner.
AU - Meier, Torsten
AU - Ma, Xuekai
AU - Berger, Bernd
AU - Aßmann, Marc
AU - Driben, Rodislav
AU - Schneider, Christian
AU - Höfling, Sven
AU - Schumacher, Stefan
ID - 43747
IS - 1
JF - Nature communications
TI - Realization of all-optical vortex switching in exciton-polariton condensates
VL - 11
ER -
TY - CONF
AU - Hannes, Wolf-Rüdiger
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 20770
SN - 9781510633193
T2 - Ultrafast Phenomena and Nanophotonics XXIV
TI - k.p-based multiband simulations of non-degenerate two-photon absorption in bulk GaAs
VL - 11278
ER -
TY - JOUR
AU - Hannes, W.-R.
AU - Trautmann, Alexander
AU - Stein, M.
AU - Schäfer, F.
AU - Koch, M.
AU - Meier, Torsten
ID - 20563
IS - 7
JF - Physical Review B
TI - Strongly nonresonant four-wave mixing in semiconductors
VL - 101
ER -
TY - JOUR
AU - Song, Xiaohong
AU - Yang, Shidong
AU - Zuo, Ruixin
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 20772
JF - Physical Review A
SN - 2469-9926
TI - Enhanced high-order harmonic generation in semiconductors by excitation with multicolor pulses
VL - 101
ER -
TY - JOUR
AU - Ma, Xuekai
AU - Berger, B
AU - Aßmann, M
AU - Driben, R
AU - Meier, Torsten
AU - Schneider, C
AU - Höfling, S
AU - Schumacher, Stefan
ID - 20580
IS - 1
JF - Nature Communications
SN - 2041-1723
TI - Realization of all-optical vortex switching in exciton-polariton condensates
VL - 11
ER -
TY - JOUR
AU - Vondran, J.
AU - Spitzer, F.
AU - Bayer, M.
AU - Akimov, I. A.
AU - Trautmann, Alexander
AU - Reichelt, Matthias
AU - Meier, Cedrik
AU - Weber, N.
AU - Meier, Torsten
AU - André, R.
AU - Mariette, H.
ID - 14544
IS - 15
JF - Physical Review B
SN - 2469-9950
TI - Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure
VL - 100
ER -
TY - JOUR
AB - An integrated chip with quantum state generation, active polarization manipulation, and precise time control is demonstrated.
AU - Luo, Kai-Hong
AU - Brauner, Sebastian
AU - Eigner, Christof
AU - Sharapova, Polina
AU - Ricken, Raimund
AU - Meier, Torsten
AU - Herrmann, Harald
AU - Silberhorn, Christine
ID - 37288
IS - 1
JF - Science Advances
KW - Multidisciplinary
SN - 2375-2548
TI - Nonlinear integrated quantum electro-optic circuits
VL - 5
ER -
TY - CONF
AU - Hannes, Wolf-Rüdiger
AU - Krauß-Kodytek, Laura
AU - Ruppert, Claudia
AU - Betz, Markus
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 13285
SN - 9781510624740
T2 - Ultrafast Phenomena and Nanophotonics XXIII
TI - Intensity-dependent degenerate and non-degenerate nonlinear optical absorption of direct-gap semiconductors
VL - 10916
ER -
TY - JOUR
AU - Hannes, Wolf-Rüdiger
AU - Meier, Torsten
ID - 13284
IS - 12
JF - Physical Review B
SN - 2469-9950
TI - Higher-order contributions and nonperturbative effects in the nondegenerate nonlinear optical absorption of semiconductors using a two-band model
VL - 99
ER -
TY - CONF
AB - The fundamental interband absorption in gallium arsenide shows a strong blue shift when biased by mid-infrared transients exceeding 10 MV/cm. This subcycle feature is induced by the localization of electronic wavefunctions from 3D to 2D.
AU - Meier, Torsten
AU - Bühler, Johannes
AU - Schmidt, Christian
AU - Heinrich, Alexander-Cornelius
AU - Allerbeck, Jonas
AU - Podzimski, Reinold
AU - Berghoff, Daniel
AU - Schmidt, Wolf Gero
AU - Reichl, Christian
AU - Wegscheider, Werner
AU - Brida, Daniele
AU - Leitenstorfer, Alfred
ID - 43748
T2 - XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)
TI - Subcycle Wannier-Stark Localization by Mid-Infrared Bias in Gallium Arsenide
VL - 205
ER -
TY - JOUR
AU - Vondran, J.
AU - Spitzer, F.
AU - Bayer, M.
AU - Akimov, I. A.
AU - Trautmann, Alexander
AU - Reichelt, Matthias
AU - Meier, Cedrik
AU - Weber, N.
AU - Meier, Torsten
AU - André, R.
AU - Mariette, H.
ID - 22887
IS - 15
JF - Physical Review B
SN - 2469-9950
TI - Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure
VL - 100
ER -
TY - GEN
AB - Measurement-induced nonclassical effects in a two-mode interferometer are
investigated theoretically using numerical simulations and analytical results.
We demonstrate that for certain parameters measurements within the
interferometer lead to the occurrence of two-mode squeezing. The results
strongly depend on the detection probability, the phase inside the
interferometer, and the choice of the input states. The appropriate parameters
for maximized squeezing are obtained. We analyze the influence of losses and
confirm that the predicted effects are within reach of current experimental
techniques.
AU - Riabinin, Matvei
AU - Sharapova, Polina
AU - Bartley, Tim
AU - Meier, Torsten
ID - 22884
T2 - arXiv:1912.09097
TI - Generating two-mode squeezing with multimode measurement-induced nonlinearity
ER -
TY - JOUR
AU - Song, Xiaohong
AU - Zuo, Ruixin
AU - Yang, Shidong
AU - Li, Pengcheng
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 13900
IS - 3
JF - Optics Express
SN - 1094-4087
TI - Attosecond temporal confinement of interband excitation by intraband motion
VL - 27
ER -
TY - JOUR
AU - Duc, Huynh Thanh
AU - Ngo, Cong
AU - Meier, Torsten
ID - 13283
IS - 4
JF - Physical Review B
SN - 2469-9950
TI - Ballistic photocurrents in semiconductor quantum wells caused by the excitation of asymmetric excitons
VL - 100
ER -
TY - JOUR
AU - Driben, R
AU - Ma, Xuekai
AU - Schumacher, Stefan
AU - Meier, Torsten
ID - 20578
IS - 6
JF - Optics Letters
SN - 0146-9592
TI - Bloch oscillations of multidimensional dark soliton wave packets and light bullets
VL - 44
ER -
TY - JOUR
AU - Belobo, D. Belobo
AU - Meier, T.
ID - 13902
JF - Scientific Reports
SN - 2045-2322
TI - Exotic complexes in one-dimensional Bose-Einstein condensates with spin-orbit coupling
VL - 8
ER -
TY - CONF
AU - Sharapova, Polina
AU - Luo, Kai Hong
AU - Herrmann, Harald
AU - Reichelt, Matthias
AU - Silberhorn, Christine
AU - Meier, Torsten
ID - 40386
SN - 978-1-943580-42-2
T2 - Conference on Lasers and Electro-Optics
TI - Manipulation of Two-Photon Interference by Entanglement
ER -
TY - JOUR
AU - Belobo, D. Belobo
AU - Meier, Torsten
ID - 4365
IS - 1
JF - Scientific Reports
SN - 2045-2322
TI - Exotic complexes in one-dimensional Bose-Einstein condensates with spin-orbit coupling
VL - 8
ER -
TY - CONF
AU - Luo, Kai Hong
AU - Brauner, Sebastian
AU - Eigner, Christof
AU - Sharapova, Polina
AU - Ricken, Raimund
AU - Meier, Torsten
AU - Herrmann, Harald
AU - Silberhorn, Christine
ID - 40388
SN - 978-1-943580-42-2
T2 - Conference on Lasers and Electro-Optics
TI - Monolithically Integrated Hong-Ou-Mandel Experiment in LiNbO3
ER -
TY - CHAP
AB - Short laser pulses are able to generate material excitations with a well-defined phase which is imposed by the optical excitation source. The generated coherent superposition state be described as an optical polarization which exists only in non-equilibrium situations. The coherence, i.e., the phase relations between the optical transitions that originate from the excitation, leads to several interesting effects in time-resolved linear and nonlinear optical spectroscopy. In this article, the basic principles that underlie these coherent transients are introduced and several examples are presented.
AU - Meier, Torsten
AU - Koch, S.W.
ED - Guenther, Bob
ED - Steel, Duncan
ID - 43193
T2 - Encyclopedia of Modern Optics (Second Edition)
TI - Foundations of Coherent Transients in Semiconductors
VL - 4
ER -
TY - JOUR
AU - Schmidt, C.
AU - Bühler, J.
AU - Heinrich, A.-C.
AU - Allerbeck, J.
AU - Podzimski, R.
AU - Berghoff, D.
AU - Meier, Torsten
AU - Schmidt, Wolf Gero
AU - Reichl, C.
AU - Wegscheider, W.
AU - Brida, D.
AU - Leitenstorfer, A.
ID - 4370
IS - 1
JF - Nature Communications
SN - 2041-1723
TI - Signatures of transient Wannier-Stark localization in bulk gallium arsenide
VL - 9
ER -
TY - JOUR
AU - Schmidt, Claudia
AU - Bühler, J.
AU - Heinrich, A.-C.
AU - Allerbeck, J.
AU - Podzimski, R.
AU - Berghoff, Daniel
AU - Meier, Torsten
AU - Schmidt, Wolf Gero
AU - Reichl, C.
AU - Wegscheider, W.
AU - Brida, D.
AU - Leitenstorfer, A.
ID - 10018
JF - Nature Communications
SN - 2041-1723
TI - Signatures of transient Wannier-Stark localization in bulk gallium arsenide
VL - 9
ER -
TY - JOUR
AU - Geiger, Zachary A.
AU - Fujiwara, Kurt M.
AU - Singh, Kevin
AU - Senaratne, Ruwan
AU - Rajagopal, Shankari V.
AU - Lipatov, Mikhail
AU - Shimasaki, Toshihiko
AU - Driben, Rodislav
AU - Konotop, Vladimir V.
AU - Meier, Torsten
AU - Weld, David M.
ID - 4369
IS - 21
JF - Physical Review Letters
SN - 0031-9007
TI - Observation and Uses of Position-Space Bloch Oscillations in an Ultracold Gas
VL - 120
ER -
TY - JOUR
AU - Geiger, Zachary A.
AU - Fujiwara, Kurt M.
AU - Singh, Kevin
AU - Senaratne, Ruwan
AU - Rajagopal, Shankari V.
AU - Lipatov, Mikhail
AU - Shimasaki, Toshihiko
AU - Driben, Rodislav
AU - Konotop, Vladimir V.
AU - Meier, Torsten
AU - Weld, David M.
ID - 13286
IS - 21
JF - Physical Review Letters
SN - 0031-9007
TI - Observation and Uses of Position-Space Bloch Oscillations in an Ultracold Gas
VL - 120
ER -
TY - JOUR
AU - Driben, R.
AU - Konotop, V. V.
AU - Malomed, B. A.
AU - Meier, Torsten
AU - Yulin, A. V.
ID - 13287
IS - 6
JF - Physical Review E
SN - 2470-0045
TI - Nonlinearity-induced localization in a periodically driven semidiscrete system
VL - 97
ER -
TY - CONF
AB - Sub-cycle transmission measurements of bulk gallium arsenide biased by intense mid-infrared transients reveal a strong blue-shift of the optical absorption when the peak electric field reaches 10 MV/cm, indicating 2D-localization of electronic wave functions.
AU - Meier, Torsten
AU - Bühler, Johannes
AU - Schmidt, Christian
AU - Heinrich, A-C.
AU - Allerbeck, Jonas
AU - Podzimski, Reinold
AU - Berghoff, Daniel
AU - Schmidt, Wolf Gero
AU - Reichl, Christian
AU - Wegscheider, Werner
AU - Brida, Daniele
AU - Leitenstorfer, Alfred
ID - 43859
SN - 978-1-943580-42-2
T2 - CLEO: QELS_Fundamental Science
TI - Wannier-Stark Localization in Bulk Gallium Arsenide Induced by Extreme Mid-Infrared Fields
ER -
TY - CONF
AU - Akimov, Ilya
AU - Poltavtsev, Sergey V.
AU - Salewski, Matthias
AU - Yugova, Irina A.
AU - Karczewski, Grzegorz
AU - Wojtowicz, Tomasz
AU - Maciej, Wiater
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Yakovlev, Dmitri
AU - Bayer, Manfred
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 13901
SN - 9781510615458
T2 - Ultrafast Phenomena and Nanophotonics XXII
TI - Coherent optical spectroscopy of charged exciton complexes in semiconductor nanostructures
VL - 10530
ER -
TY - CONF
AU - Akimov, Ilya
AU - Poltavtsev, Sergey V.
AU - Salewski, Matthias
AU - Yugova, Irina A.
AU - Karczewski, Grzegorz
AU - Wojtowicz, Tomasz
AU - Maciej , Wiater
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Yakovlev, Dmitri
AU - Bayer, Manfred
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 4366
SN - 9781510615458
T2 - Ultrafast Phenomena and Nanophotonics XXII
TI - Coherent optical spectroscopy of charged exciton complexes in semiconductor nanostructures
VL - 10530
ER -
TY - JOUR
AU - Driben, R.
AU - Konotop, V. V.
AU - Malomed, B. A.
AU - Meier, Torsten
AU - Yulin, A. V.
ID - 4368
IS - 6
JF - Physical Review E
SN - 2470-0045
TI - Nonlinearity-induced localization in a periodically driven semidiscrete system
VL - 97
ER -
TY - JOUR
AU - Yulin, A.
AU - Driben, R.
AU - Meier, Torsten
ID - 13289
IS - 3
JF - Physical Review A
SN - 2469-9926
TI - Bloch oscillations and resonant radiation of light propagating in arrays of nonlinear fibers with high-order dispersion
VL - 96
ER -
TY - JOUR
AU - Podzimski, Reinold
AU - Duc, Huynh Thanh
AU - Meier, Torsten
ID - 13332
IS - 20
JF - Physical Review B
SN - 2469-9950
TI - Anisotropic excitons and their contributions to shift current transients in bulk GaAs
VL - 96
ER -
TY - JOUR
AU - Poltavtsev, S. V.
AU - Kosarev, A. N.
AU - Akimov, I. A.
AU - Yakovlev, D. R.
AU - Sadofev, S.
AU - Puls, J.
AU - Hoffmann, S. P.
AU - Albert, M.
AU - Meier, Cedrik
AU - Meier, Torsten
AU - Bayer, M.
ID - 7480
IS - 3
JF - Physical Review B
SN - 2469-9950
TI - Time-resolved photon echoes from donor-bound excitons in ZnO epitaxial layers
VL - 96
ER -
TY - JOUR
AU - Sharapova, Polina
AU - Luo, Kai Hong
AU - Herrmann, Harald
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Silberhorn, Christine
ID - 13906
IS - 12
JF - New Journal of Physics
SN - 1367-2630
TI - Toolbox for the design of LiNbO3-based passive and active integrated quantum circuits
VL - 19
ER -
TY - JOUR
AU - Sharapova, Polina
AU - Luo, Kai Hong
AU - Herrmann, Harald
AU - Reichelt, Matthias
AU - Silberhorn, Christine
AU - Meier, Torsten
ID - 13905
IS - 4
JF - Physical Review A
SN - 2469-9926
TI - Modified two-photon interference achieved by the manipulation of entanglement
VL - 96
ER -
TY - JOUR
AU - Sharapova, Polina
AU - Luo, Kai Hong
AU - Herrmann, Harald
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Silberhorn, Christine
ID - 26061
IS - 12
JF - New Journal of Physics
SN - 1367-2630
TI - Toolbox for the design of LiNbO3-based passive and active integrated quantum circuits
VL - 19
ER -
TY - JOUR
AU - Meier, Torsten
AU - Sharapova, P.R.
AU - Luo, K.H.
AU - Herrmann, H.
AU - Reichelt, Matthias
AU - Silberhorn, C.
ID - 43885
JF - arXiv preprint arXiv:1704.03769
TI - Generation and active manipulation of qubits in LiNbO3-based integrated circuits
ER -
TY - JOUR
AU - Salewski, M.
AU - Poltavtsev, S. V.
AU - Yugova, I. A.
AU - Karczewski, G.
AU - Wiater, M.
AU - Wojtowicz, T.
AU - Yakovlev, D. R.
AU - Akimov, I. A.
AU - Meier, Torsten
AU - Bayer, M.
ID - 13909
IS - 3
JF - Physical Review X
SN - 2160-3308
TI - High-Resolution Two-Dimensional Optical Spectroscopy of Electron Spins
VL - 7
ER -
TY - CONF
AU - Höpker, Jan Philipp
AU - Bartnick, Moritz
AU - Meyer-Scott, Evan
AU - Thiele, Frederik
AU - Meier, Torsten
AU - Bartley, Tim
AU - Krapick, Stephan
AU - Montaut, Nicola M.
AU - Santandrea, Matteo
AU - Herrmann, Harald
AU - Lengeling, Sebastian
AU - Ricken, Raimund
AU - Quiring, Viktor
AU - Lita, Adriana E.
AU - Verma, Varun B.
AU - Gerrits, Thomas
AU - Nam, Sae Woo
AU - Silberhorn, Christine
ED - Agio, Mario
ED - Srinivasan, Kartik
ED - Soci, Cesare
ID - 13903
SN - 9781510611733
T2 - Quantum Photonic Devices
TI - Towards integrated superconducting detectors on lithium niobate waveguides
VL - 10358
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh Thanh
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 13334
T2 - Ultrafast Phenomena and Nanophotonics XXI
TI - A microscopic approach to ultrafast near band gap photocurrents in bulk semiconductors
VL - 10102
ER -
TY - JOUR
AU - Poltavtsev, S. V.
AU - Reichelt, Matthias
AU - Akimov, I. A.
AU - Karczewski, G.
AU - Wiater, M.
AU - Wojtowicz, T.
AU - Yakovlev, D. R.
AU - Meier, Torsten
AU - Bayer, M.
ID - 13908
IS - 7
JF - Physical Review B
SN - 2469-9950
TI - Damping of Rabi oscillations in intensity-dependent photon echoes from exciton complexes in a CdTe/(Cd,Mg)Te single quantum well
VL - 96
ER -
TY - JOUR
AU - Driben, R.
AU - Konotop, V. V.
AU - Meier, Torsten
AU - Yulin, A. V.
ID - 13288
IS - 1
JF - Scientific Reports
SN - 2045-2322
TI - Bloch oscillations sustained by nonlinearity
VL - 7
ER -
TY - JOUR
AU - Liu, Hong
ID - 13913
JF - The European Physical Journal B
SN - 1434-6028
TI - Influence of strong screening effect on the perpendicular- polarized linear excitonic absorption spectra of semiconducting carbon nanotubes
VL - 89
ER -
TY - JOUR
AU - Sanz, M.
AU - Egusquiza, I. L.
AU - Di Candia, R.
AU - Saberi, H.
AU - Lamata, L.
AU - Solano, E.
ID - 13914
JF - Scientific Reports
SN - 2045-2322
TI - Entanglement classification with matrix product states
VL - 6
ER -
TY - JOUR
AU - Opatrný, Tomáš
AU - Saberi, Hamed
AU - Brion, Etienne
AU - Mølmer, Klaus
ID - 13921
IS - 2
JF - Physical Review A
SN - 2469-9926
TI - Counterdiabatic driving in spin squeezing and Dicke-state preparation
VL - 93
ER -
TY - JOUR
AU - Grynko, Yevgen
AU - Zentgraf, Thomas
AU - Meier, Torsten
AU - Förstner, Jens
ID - 1454
IS - 9
JF - Applied Physics B
KW - tet_topic_meta
KW - tet_topic_shg
SN - 0946-2171
TI - Simulations of high harmonic generation from plasmonic nanoparticles in the terahertz region
VL - 122
ER -
TY - JOUR
AU - Sternemann, E.
AU - Jostmeier, T.
AU - Ruppert, C.
AU - Thunich, S.
AU - Duc, H. T.
AU - Podzimski, R.
AU - Meier, Torsten
AU - Betz, M.
ID - 13919
JF - Applied Physics B
SN - 0946-2171
TI - Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications
VL - 122
ER -
TY - JOUR
AB - For incident light polarized perpendicular to the tube axis the multi-band semiconductor Bloch equations (MB-SBEs) that involve various screened interband Coulomb interactions (ICIs) are derived. The calculated E 12 peak is very close to the longitudinal excitonic peak E 22. Compared with the previous theoretical peak positions, the blue-shift of the peak in our results is about 0.5 eV. Then, subsequent detailed analyses show that the screening effect on the diagonal ICIs (D-ICIs) plays a key role in this big blue-shift. The valley-degenerate transverse pair excitations holding the same selection rule further enhance the screening effect on D-ICIs. Specially at q = 0 the dielectric function acting on the D-ICIs enhances two times. In our calculation the strong screening effect contributes 90% of the big blue-shift, while the non-diagonal ICIs (ND-ICIs) contribute to 10% of the blue-shift.
AU - Meier, Torsten
AU - Liu, Hong
ID - 43194
JF - The European Physical Journal B
TI - Influence of strong screening effect on the perpendicular polarized linear excitonic absorption spectra of semiconducting carbon nanotubes
VL - 89
ER -
TY - JOUR
AB - We present the synthesis of indium oxide (In2O3) inverse opal films with photonic stop bands in the visible range by a structure replication method. Artificial opal films made of poly(methyl methacrylate) (PMMA) spheres are utilized as template. The opal films are deposited via sedimentation facilitated by ultrasonication, and then impregnated by indium nitrate solution, which is thermally converted to In2O3 after drying. The quality of the resulting inverse opal film depends on many parameters; in this study the water content of the indium nitrate/PMMA composite after drying is investigated. Comparison of the reflectance spectra recorded by vis-spectroscopy with simulated data shows a good agreement between the peak position and calculated stop band positions for the inverse opals. This synthesis is less complex and highly efficient compared to most other techniques and is suitable for use in many applications.
AU - Amrehn, Sabrina
AU - Berghoff, Daniel
AU - Nikitin, Andreas
AU - Reichelt, Matthias
AU - Wu, Xia
AU - Meier, Torsten
AU - Wagner, Thorsten
ID - 13917
JF - Photonics and Nanostructures - Fundamentals and Applications
SN - 1569-4410
TI - Indium oxide inverse opal films synthesized by structure replication method
VL - 19
ER -
TY - JOUR
AB - The dynamics of a pair of harmonic oscillators represented by three-dimensional fields coupled with a repulsive cubic nonlinearity is investigated through direct simulations of the respective field equations and with the help of the finite-mode Galerkin approximation (GA), which represents the two interacting fields by a superposition of
3+3 harmonic-oscillator p-wave eigenfunctions with orbital and magnetic quantum numbers l=1 and m=1, 0, −1. The system can be implemented in binary Bose-Einstein condensates, demonstrating the potential of the atomic condensates to emulate various complex modes predicted by classical field theories. First, the GA very accurately predicts a broadly degenerate set of the system's ground states in the p-wave manifold, in the form of complexes built of a dipole coaxial with another dipole or vortex, as well as complexes built of mutually orthogonal dipoles. Next, pairs of noncoaxial vortices and/or dipoles, including pairs of mutually perpendicular vortices, develop remarkably stable dynamical regimes, which feature periodic exchange of the angular momentum and periodic switching between dipoles and vortices. For a moderately strong nonlinearity, simulations of the coupled-field equations agree very well with results produced by the GA, demonstrating that the dynamics is accurately spanned by the set of six modes limited to l=1.
AU - Driben, R.
AU - Konotop, V. V.
AU - Malomed, B. A.
AU - Meier, Torsten
ID - 13915
IS - 1
JF - Physical Review E
SN - 2470-0045
TI - Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators
VL - 94
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh Thanh
AU - Priyadarshi, Shekhar
AU - Schmidt, Christian
AU - Bieler, Mark
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 13918
T2 - Ultrafast Phenomena and Nanophotonics XX
TI - Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations
VL - 9746
ER -
TY - JOUR
AB - Spins in semiconductor quantum dots have been considered as prospective quantum bit excitations. Their coupling to the crystal environment manifests itself in a limitation of the spin coherence times to the microsecond range, both for electron and hole spins. This rather short-lived coherence compared to atomic states asks for manipulations on timescales as short as possible. Due to the huge dipole moment for transitions between the valence and conduction band, pulsed laser systems offer the possibility to perform manipulations within picoseconds or even faster. Here, we report on results that show the potential of optical spin manipulations with currently available pulsed laser systems. Using picosecond laser pulses, we demonstrate optically induced spin rotations of electron and hole spins. We further realize the optical decoupling of the hole spins from the nuclear surrounding at the nanosecond timescales and demonstrate an all-optical spin tomography for interacting electron spin sub-ensembles.
AU - Varwig, S.
AU - Evers, E.
AU - Greilich, A.
AU - Yakovlev, D. R.
AU - Reuter, Dirk
AU - Wieck, A. D.
AU - Meier, Torsten
AU - Zrenner, Artur
AU - Bayer, M.
ID - 4246
IS - 1
JF - Applied Physics B
KW - Spin Polarization
KW - Pump Pulse
KW - Trion
KW - Spin Component
KW - Coherence Time
SN - 0946-2171
TI - Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots
VL - 122
ER -
TY - JOUR
AU - Ma, Xuekai
AU - Driben, Rodislav
AU - Malomed, Boris A.
AU - Meier, Torsten
AU - Schumacher, Stefan
ID - 13910
JF - Scientific Reports
SN - 2045-2322
TI - Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction
VL - 6
ER -
TY - JOUR
AB - A method is presented to transfer a system of two-level atoms from a spin coherent state to a maximally spin squeezed Dicke state, relevant for quantum metrology and quantum information processing. The initial state is the ground state of an initial linear Hamiltonian that is gradually turned into a final quadratic Hamiltonian whose ground state is the selected Dicke state. We use compensating operators to suppress diabatic transitions to unwanted states that would occur if the change were not slow. We discuss the possibilities of constructing the compensating operators by sequential application of quadratic Hamiltonians available in experiments.
AU - Meier, Torsten
AU - Opatrný, T.
AU - Saberi, H.
AU - Brion, E.
AU - Mølmer, K.
ID - 43196
IS - 2
JF - Physical Review A
TI - Counterdiabatic driving in spin squeezing and Dicke-state preparation
VL - 93
ER -
TY - JOUR
AB - We propose an entanglement classification for symmetric quantum states based on their diagonal matrix-product-state (MPS) representation. The proposed classification, which preserves the stochastic local operation assisted with classical communication (SLOCC) criterion, relates entanglement families to the interaction length of Hamiltonians. In this manner, we establish a connection between entanglement classification and condensed matter models from a quantum information perspective. Moreover, we introduce a scalable nesting property for the proposed entanglement classification, in which the families for N parties carry over to the N + 1 case. Finally, using techniques from algebraic geometry, we prove that the minimal nontrivial interaction length n for any symmetric state is bounded by .
AU - Sanz, M.
AU - Egusquiza, I.L.
AU - Candia, R. Di
AU - Saberi, H.
AU - Lamata, L.
AU - Solano, E.
ID - 43195
JF - Scientific Reports
TI - Entanglement classification with matrix product states
VL - 6
ER -
TY - JOUR
AB - A microscopic approach that is based on the multisubband semiconductor Bloch equations formulated in the basis of a 14-band k⋅p model is employed to compute the temporal dynamics of photocurrents in GaAs quantum wells following excitation with femtosecond laser pulses. This approach provides a transparent description of the interband, intersubband, and intraband excitations, fully includes all resonant as well as off-resonant excitations, and treats the light-matter interaction nonperturbatively. For linearly polarized excitations, the photocurrents contain contributions from shift and rectification currents. We numerically compute and analyze these currents generated by excitation with femtosecond laser pulses for [110]- and [111]-oriented GaAs quantum wells. It is shown that the often employed perturbative
χ(2) approach breaks down for peak fields larger than about 10 kV/cm, and that nonperturbative effects lead to a reduction of the peak values of the shift and rectification currents and to temporal oscillations that originate from Rabi flopping. In particular, we find a complex oscillatory photon energy dependence of the magnitudes of the shift and rectification currents. Our simulations demonstrate that this dependence is the result of mixing between the heavy- and light-hole valence bands. This is a surprising finding since the band mixing has an even larger influence on the strength of the photocurrents than the absorption coefficient. For [110]-oriented GaAs quantum wells, the calculated photon energy dependence is compared to experimental results, and good agreement is obtained. This validates our theoretical approach.
AU - Duc, Huynh Thanh
AU - Podzimski, Reinold
AU - Priyadarshi, Shekhar
AU - Bieler, Mark
AU - Meier, Torsten
ID - 22942
IS - 8
JF - Physical Review B
SN - 2469-9950
TI - Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing
VL - 94
ER -
TY - JOUR
AB - Nonlinearity is the driving force for numerous important effects in nature typically showing transitions between different regimes, regular, chaotic or catastrophic behavior. Localized nonlinear modes have been the focus of intense research in areas such as fluid and gas dynamics, photonics, atomic and solid state physics etc. Due to the richness of the behavior of nonlinear systems and due to the severe numerical demands of accurate three-dimensional (3D) numerical simulations presently only little knowledge is available on the dynamics of complex nonlinear modes in 3D. Here, we investigate the dynamics of 3D non-coaxial matter wave vortices that are trapped in a parabolic potential and interact via a repulsive nonlinearity. Our numerical simulations demonstrate the existence of an unexpected and fascinating nonlinear regime that starts immediately when the nonlinearity is switched-on and is characterized by a smooth dynamics representing torque-free precession with nutations. The reported motion is proven to be robust regarding various effects such as the number of particles, dissipation and trap deformations and thus should be observable in suitably designed experiments. Since our theoretical approach, i.e., coupled nonlinear Schrödinger equations, is quite generic, we expect that the obtained novel dynamical behavior should also exist in other nonlinear systems.
AU - Driben, R.
AU - Konotop, V. V.
AU - Meier, Torsten
ID - 13916
JF - Scientific Reports
SN - 2045-2322
TI - Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices
VL - 6
ER -
TY - JOUR
AB - We investigate the transient optical response in high-quality Cd0.88Zn0.12Te crystals in the regime of slow light propagation on the lower exciton-polariton branch. Femtosecond photoexcitation leads to very substantial transmission changes in a ∼10-meV broad spectral range within the transparency window of the unexcited semiconductor. These nonlinear optical signatures decay on picosecond time scales governed by carrier thermalization and recombination. The temporal and spectral dependence indicate the dynamical optical response as arising from excitation-induced dephasing and perturbed free induction decay. Model simulations for the optical response taking into account the actual exciton-polariton dispersion and excitation-induced dephasing of a nonlinearly driven two-level system support this interpretation.
AU - Lohrenz, J.
AU - Melzer, S.
AU - Ruppert, C.
AU - Akimov, I. A.
AU - Mariette, H.
AU - Reichelt, Matthias
AU - Trautmann, Alexander
AU - Meier, Torsten
AU - Betz, M.
ID - 13920
IS - 7
JF - Physical Review B
SN - 2469-9950
TI - Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe
VL - 93
ER -
TY - JOUR
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A. V.
ID - 13923
IS - 23
JF - Optics Letters
SN - 0146-9592
TI - Interaction of high-order solitons with external dispersive waves
VL - 40
ER -
TY - JOUR
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A. V.
ID - 13924
IS - 21
JF - Optics Letters
SN - 0146-9592
TI - Weak and strong interactions between dark solitons and dispersive waves
VL - 40
ER -
TY - JOUR
AU - Driben, R.
AU - Yulin, A. V.
AU - Efimov, A.
ID - 13925
IS - 15
JF - Optics Express
SN - 1094-4087
TI - Resonant radiation from oscillating higher order solitons
VL - 23
ER -
TY - JOUR
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A. V.
ID - 13929
IS - 23
JF - Optics Letters
SN - 0146-9592
TI - Interaction of high-order solitons with external dispersive waves
VL - 40
ER -
TY - JOUR
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A. V.
ID - 13930
IS - 21
JF - Optics Letters
SN - 0146-9592
TI - Weak and strong interactions between dark solitons and dispersive waves
VL - 40
ER -
TY - JOUR
AU - Driben, R.
AU - Yulin, A. V.
AU - Efimov, A.
ID - 13931
IS - 15
JF - Optics Express
SN - 1094-4087
TI - Resonant radiation from oscillating higher order solitons
VL - 23
ER -
TY - JOUR
AB - We present radiation mechanism exhibited by a higher order soliton. In a course of its evolution the higher-order soliton emits polychromatic radiation resulting in formation of multipeak frequency comb-like spectral band. The shape and spectral position of this band can be effectively controlled by the relative strength of the third order dispersion. An analytical description is corroborated by numerical simulations. It is shown that for longer pulses the described effect persists also under the action of higher order perturbations such as Raman and self-steepening.
AU - Driben, R.
AU - Yulin, A. V.
AU - Efimov, A.
ID - 43250
IS - 15
JF - Optics Express
TI - Resonant radiation from oscillating higher order solitons
VL - 23
ER -
TY - JOUR
AB - The effect of mutual interactions between dark solitons and dispersive waves is investigated numerically and analytically. The condition of the resonant scattering of dispersive waves on dark solitons is derived and compared against the results of the numerical simulations. It is shown that the interaction with intense dispersive waves affects the dynamics of the solitons by accelerating, decelerating, or destroying them. It is also demonstrated that two dark solitons can form a cavity for dispersive waves bouncing between the two dark solitons. The differences of the resonant scattering of the dispersive waves on dark and bright solitons are discussed. In particular, we demonstrate that two dark solitons and a dispersive wave bouncing in between them create a solitonic cavity with convex “mirrors,” unlike the concave “mirror” in the case of bright solitons.
AU - Oreshnikov, I.
AU - Yulin, A. V.
AU - Driben, R.
ID - 43249
IS - 21
JF - Optics Letters
TI - Weak and strong interactions between dark solitons and dispersive waves
VL - 40
ER -
TY - CONF
AB - The discovery of Airy waves, in the context of solutions to the linear Schrödinger equation [1], inspired extensive research for self-accelerating waves in optical settings [2-6]. Fascinating self-accelerating, self-healing light beams propagating along the bending trajectories can manifest themself in the spatial and the temporal domains and are promising for a large variety of potential applications.
AU - Meier, Torsten
AU - Driben, R.
AU - Konotop, V.V.
ID - 43892
SN - 978-1-4673-7475-0
T2 - European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
TI - Vectorial self-accelerating beams
ER -
TY - JOUR
AB - Recently, a new class of nonlinear systems was introduced, in which the self-trapping of fundamental and vortical localized modes in space of dimension D is supported by cubic self-repulsion with a strength growing as a function of the distance from the center, r, at any rate faster that rD. These systems support robust 2D and 3D modes which either do not exist or are unstable in other nonlinear systems. Here we demonstrate a possibility to create solitary vortices in this setting by applying a phase-imprinting torque to the ground state. Initially, a strong torque completely destroys the ground state. However, contrary to usual systems, where the destruction is irreversible, the present ones demonstrate a rapid restabilization and the creation of one or several shifted vortices orbiting the center. For the sake of comparison, we show analytically that, in the linear system with a 3D trapping potential, the action of a torque on the ground state is inefficient and creates only even-vorticity states with a small probability.
AU - Driben, Rodislav
AU - Meier, Torsten
AU - Malomed, Boris A.
ID - 13935
JF - Scientific Reports
SN - 2045-2322
TI - Creation of vortices by torque in multidimensional media with inhomogeneous defocusing nonlinearity
VL - 5
ER -
TY - JOUR
AB - Recently, a new class of nonlinear systems was introduced, in which the self-trapping of fundamental and vortical localized modes in space of dimension D is supported by cubic self-repulsion with a strength growing as a function of the distance from the center, r, at any rate faster that rD. These systems support robust 2D and 3D modes which either do not exist or are unstable in other nonlinear systems. Here we demonstrate a possibility to create solitary vortices in this setting by applying a phase-imprinting torque to the ground state. Initially, a strong torque completely destroys the ground state. However, contrary to usual systems, where the destruction is irreversible, the present ones demonstrate a rapid restabilization and the creation of one or several shifted vortices orbiting the center. For the sake of comparison, we show analytically that, in the linear system with a 3D trapping potential, the action of a torque on the ground state is inefficient and creates only even-vorticity states with a small probability.
AU - Driben, Rodislav
AU - Meier, Torsten
AU - Malomed, Boris A.
ID - 22944
JF - Scientific Reports
SN - 2045-2322
TI - Creation of vortices by torque in multidimensional media with inhomogeneous defocusing nonlinearity
VL - 5
ER -
TY - JOUR
AB - It is demonstrated that a two-component Bose-Einstein condensate (BEC) with all-repulsive inter-atomic interactions loaded into a radially symmetric harmonic trap supports robust non-coaxial vortices with approximately orthogonal vortex lines in each of the components. These cross vortices are excited from the linear modes by a sudden switch-on of the nonlinearity (via Feshbach resonance) and are characterized by persistent dynamical regimes of precession with nutation, resembling the motion of a rigid body. The obtained dynamics can be understood qualitatively on the basis of a simple mechanical model.
AU - Meier, Torsten
AU - Driben, R.
AU - Konotop, V.V.
ID - 43896
JF - arXiv preprint arXiv:1505.04113
TI - Non-coaxial vortices in two-component Bose-Einstein condensates: Persistent precession and nutation
ER -
TY - JOUR
AU - Liu, Hong
AU - Heinze, Dirk Florian
AU - Thanh Duc, Huynh
AU - Schumacher, Stefan
AU - Meier, Torsten
ID - 13922
IS - 44
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
TI - Curvature effects in the band structure of carbon nanotubes including spin–orbit coupling
VL - 27
ER -
TY - JOUR
AB - The Kane–Mele model was previously used to describe effective spin–orbit couplings (SOCs) in graphene. Here we extend this model and also incorporate curvature effects to analyze the combined influence of SOC and curvature on the band structure of carbon nanotubes (CNTs). The extended model then reproduces the chirality-dependent asymmetric electron-hole splitting for semiconducting CNTs and in the band structure for metallic CNTs shows an opening of the band gap and a change of the Fermi wave vector with spin. For chiral semiconducting CNTs with large chiral angle we show that the spin-splitting configuration of bands near the Fermi energy depends on the value of $\text{mod}(2n+m,3)$ .
AU - Liu, Hong
AU - Heinze, Dirk Florian
AU - Thanh Duc, Huynh
AU - Schumacher, Stefan
AU - Meier, Torsten
ID - 22946
IS - 44
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
TI - Curvature effects in the band structure of carbon nanotubes including spin–orbit coupling
VL - 27
ER -
TY - JOUR
AB - We predict a variety of composite quiescent and spinning two- and three-dimensional (2D and 3D) self-trapped modes in media with a repulsive nonlinearity whose local strength grows from center to periphery. These are 2D dipoles and quadrupoles, and 3D octupoles, as well as vortex–antivortex pairs and quadruplets. Unlike other multidimensional models, where such complex bound states either do not exist or are subject to strong instabilities, these modes are remarkably robust in the present setting. The results are obtained by means of numerical methods and analytically, using the Thomas–Fermi approximation. The predicted states may be realized in optical and matter-wave media with controllable cubic nonlinearities
AU - Driben, Rodislav
AU - Dror, Nir
AU - Malomed, Boris A
AU - Meier, Torsten
ID - 13926
JF - New Journal of Physics
SN - 1367-2630
TI - Multipoles and vortex multiplets in multidimensional media with inhomogeneous defocusing nonlinearity
VL - 17
ER -
TY - JOUR
AB - We predict a variety of composite quiescent and spinning two- and three-dimensional (2D and 3D) self-trapped modes in media with a repulsive nonlinearity whose local strength grows from center to periphery. These are 2D dipoles and quadrupoles, and 3D octupoles, as well as vortex–antivortex pairs and quadruplets. Unlike other multidimensional models, where such complex bound states either do not exist or are subject to strong instabilities, these modes are remarkably robust in the present setting. The results are obtained by means of numerical methods and analytically, using the Thomas–Fermi approximation. The predicted states may be realized in optical and matter-wave media with controllable cubic nonlinearities
AU - Driben, Rodislav
AU - Dror, Nir
AU - Malomed, Boris A
AU - Meier, Torsten
ID - 13932
JF - New Journal of Physics
SN - 1367-2630
TI - Multipoles and vortex multiplets in multidimensional media with inhomogeneous defocusing nonlinearity
VL - 17
ER -
TY - JOUR
AB - We predict a variety of composite quiescent and spinning two- and three-dimensional (2D and 3D) self-trapped modes in media with a repulsive nonlinearity whose local strength grows from center to periphery. These are 2D dipoles and quadrupoles, and 3D octupoles, as well as vortex–antivortex pairs and quadruplets. Unlike other multidimensional models, where such complex bound states either do not exist or are subject to strong instabilities, these modes are remarkably robust in the present setting. The results are obtained by means of numerical methods and analytically, using the Thomas–Fermi approximation. The predicted states may be realized in optical and matter-wave media with controllable cubic nonlinearities
AU - Driben, Rodislav
AU - Dror, Nir
AU - Malomed, Boris A.
AU - Meier, Torsten
ID - 22948
JF - New Journal of Physics
SN - 1367-2630
TI - Multipoles and vortex multiplets in multidimensional media with inhomogeneous defocusing nonlinearity
VL - 17
ER -
TY - CONF
AU - Lange, C.
AU - Schubert, O.
AU - Hohenleutner, M.
AU - Langer, F.
AU - Baierl, S.
AU - Maag, T.
AU - Urbanek, B.
AU - Edwards, E. R. J.
AU - Woltersdorf, G.
AU - Bougeard, D.
AU - Huttner, U.
AU - Golde, D.
AU - Meier, Torsten
AU - Kira, M.
AU - Koch, S. W.
AU - Huber, R.
ED - Vodopyanov, Konstantin L.
ID - 13927
T2 - Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
TI - Sub-cycle control of multi-THz high-harmonic generation and all-coherent charge transport in bulk semiconductors
VL - 9347
ER -
TY - CONF
AU - Lange, C.
AU - Schubert, O.
AU - Hohenleutner, M.
AU - Langer, F.
AU - Baierl, S.
AU - Maag, T.
AU - Urbanek, B.
AU - Edwards, E. R. J.
AU - Woltersdorf, G.
AU - Bougeard, D.
AU - Huttner, U.
AU - Golde, D.
AU - Meier, Torsten
AU - Kira, M.
AU - Koch, S. W.
AU - Huber, R.
ED - Vodopyanov, Konstantin L.
ID - 13933
T2 - Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
TI - Sub-cycle control of multi-THz high-harmonic generation and all-coherent charge transport in bulk semiconductors
VL - 9347
ER -
TY - CONF
AU - Lange, C.
AU - Schubert, O.
AU - Hohenleutner, M.
AU - Langer, F.
AU - Baierl, S.
AU - Maag, T.
AU - Urbanek, B.
AU - Edwards, E. R. J.
AU - Woltersdorf, G.
AU - Bougeard, D.
AU - Huttner, U.
AU - Golde, D.
AU - Meier, Torsten
AU - Kira, M.
AU - Koch, S. W.
AU - Huber, R.
ED - Vodopyanov, Konstantin L.
ID - 22949
T2 - Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
TI - Sub-cycle control of multi-THz high-harmonic generation and all-coherent charge transport in bulk semiconductors
VL - 9347
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh T.
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ED - Tsen, Kong-Thon
ID - 22950
T2 - SPIE Proceedings Vol. 9361: Ultrafast Phenomena and Nanophotonics XIX
TI - Time-domain calculations of shift currents in bulk GaAs
VL - 9361
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh T.
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ED - Tsen, Kong-Thon
ID - 13934
T2 - Ultrafast Phenomena and Nanophotonics XIX
TI - Time-domain calculations of shift currents in bulk GaAs
VL - 9361
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh T.
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ED - Tsen, Kong-Thon
ID - 13928
T2 - Ultrafast Phenomena and Nanophotonics XIX
TI - Time-domain calculations of shift currents in bulk GaAs
VL - 9361
ER -
TY - CONF
AU - Podzimski, Reinold
AU - Duc, Huynh T.
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ED - Tsen, Kong-Thon
ID - 22945
T2 - Ultrafast Phenomena and Nanophotonics XIX
TI - Time-domain calculations of shift currents in bulk GaAs
VL - 9361
ER -
TY - JOUR
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A. V.
ID - 22947
JF - Optics Letters
SN - 0146-9592
TI - Interaction of high-order solitons with external dispersive waves
ER -
TY - JOUR
AB - The effect of mutual interaction between second-order soliton and dispersive waves (DWs) is investigated. It is predicted analytically and confirmed numerically that DWs (both transmitted and reflected components) become polychromatic after interaction with the soliton. Collision with DWs of considerable intensity can lead to acceleration/deceleration and central frequency shift of the soliton, while still preserving the soliton’s oscillating structure. Two second-order solitons with resonant DWs trapped between them can form an effective solitonic cavity with “flat” or “concave mirrors,” depending on the intensity of the input.
AU - Meier, Torsten
AU - Oreshnikov, I.
AU - Driben, R.
AU - Yulin, A.V.
ID - 43197
IS - 23
JF - Optics Letters
TI - Interaction of high-order solitons with external dispersive waves
VL - 40
ER -
TY - JOUR
AB - Ultrafast charge transport in strongly biased semiconductors is at the heart of high-speed electronics, electro-optics and fundamental solid-state physics1,2,3,4,5,6,7,8,9,10,11,12,13. Intense light pulses in the terahertz spectral range have opened fascinating vistas14,15,16,17,18,19,20,21. Because terahertz photon energies are far below typical electronic interband resonances, a stable electromagnetic waveform may serve as a precisely adjustable bias5,11,17,19. Novel quantum phenomena have been anticipated for terahertz amplitudes, reaching atomic field strengths8,9,10. We exploit controlled (multi-)terahertz waveforms with peak fields of 72 MV cm−1 to drive coherent interband polarization combined with dynamical Bloch oscillations in semiconducting gallium selenide. These dynamics entail the emission of phase-stable high-harmonic transients, covering the entire terahertz-to-visible spectral domain between 0.1 and 675 THz. Quantum interference of different ionization paths of accelerated charge carriers is controlled via the waveform of the driving field and explained by a quantum theory of inter- and intraband dynamics. Our results pave the way towards all-coherent terahertz-rate electronics.
AU - Meier, Torsten
AU - Schubert, O.
AU - Hohenleutner, M.
AU - Langer, F.
AU - Urbanek, B.
AU - Lange, C.
AU - Huttner, U.
AU - Golde, D.
AU - Kira, M.
AU - Koch, S. W.
AU - Huber, R.
ID - 43198
IS - 2
JF - Nature Photonics
TI - Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations
VL - 8
ER -
TY - JOUR
AB - The nonadiabatic dynamics of a many-body system driven through a quantum critical point can be controlled using counterdiabatic driving, where the formation of excitations is suppressed by assisting the dynamics with auxiliary multiple-body nonlocal interactions. We propose an alternative scheme which circumvents practical challenges to realize shortcuts to adiabaticity in mesoscopic systems by tailoring the functional form of the auxiliary counterdiabatic interactions. A driving scheme resorting in short-range few-body interactions is shown to generate an effectively adiabatic dynamics.
AU - Saberi, H.
AU - Opatrný, T.
AU - Mølmer, K.
AU - del Campo,, A.
ID - 43251
IS - 6
JF - Physical Review A
TI - Adiabatic tracking of quantum many-body dynamics
VL - 90
ER -
TY - CONF
AB - The carrier wave of high-intensity phase-locked multi-THz pulses controls dynamical Bloch oscillations and interband polarization in bulk semiconductors, leading to the emission of all-coherent high-order harmonics covering 12.7 optical octaves from THz to VIS regimes.
AU - Meier, Torsten
ID - 43907
SN - 1-55752-286-3
T2 - Frontiers in Optics 2014, OSA Technical Digest
TI - Coherent bloch oscillations driven by ultrastrong THz excitation
ER -
TY - CONF
AB - Dynamical Bloch oscillations and coherent interband polarization in bulk GaSe are controlled by CEP-stable, ultra-intense multi-THz waveforms and result in the emission of phase-stable high-order harmonics covering 12.7 optical octaves from THz to VIS regimes.
AU - Meier, Torsten
AU - Langer, F.
AU - Schubert, O.
AU - Hohenleutner, M.
AU - Urbanek, B.
AU - Lange, C.
AU - Huttner, U.
AU - Golde, D.
AU - Kira, M.
AU - Koch, S.W.
AU - Huber, R.
ID - 43920
SN - 978-1-55752-999-2
T2 - CLEO: QELS_Fundamental Science
TI - CEP control of dynamical Bloch oscillations in a bulk semiconductor via ultra-intense multi-THz fields
ER -
TY - JOUR
AB - We show, by means of numerical and analytical methods, that media with a repulsive nonlinearity which grows from the center to the periphery support a remarkable variety of previously unknown complex stationary and dynamical three-dimensional (3D) solitary-wave states. Peanut-shaped modulation profiles give rise to vertically symmetric and antisymmetric vortex states, and novel stationary hybrid states, built of top and bottom vortices with opposite topological charges, as well as robust dynamical hybrids, which feature stable precession of a vortex on top of a zero-vorticity soliton. The analysis reveals stability regions for symmetric, antisymmetric, and hybrid states. In addition, bead-shaped modulation profiles give rise to the first example of exact analytical solutions for stable 3D vortex solitons. The predicted states may be realized in media with a controllable cubic nonlinearity, such as Bose–Einstein condensates.
AU - Driben, Rodislav
AU - Kartashov, Yaroslav V.
AU - Malomed, Boris A.
AU - Meier, Torsten
AU - Torner, Lluis
ID - 22957
JF - New Journal of Physics
SN - 1367-2630
TI - Three-dimensional hybrid vortex solitons
VL - 16
ER -
TY - JOUR
AB - We find that the recently introduced model of self-trapping supported by a spatially growing strength of a repulsive nonlinearity gives rise to robust vortex-soliton tori, i.e., three-dimensional vortex solitons, with topological charges
S≥1. The family with S=1 is completely stable, while the one with S=2 has alternating regions of stability and instability. The families are nearly exactly reproduced in an analytical form by the Thomas-Fermi approximation. Unstable states with S=2 and 3 split into persistently rotating pairs or triangles of unitary vortices. Application of a moderate torque to the vortex torus initiates a persistent precession mode, with the torus’ axle moving along a conical surface. A strong torque heavily deforms the vortex solitons, but, nonetheless, they restore themselves with the axle oriented according to the vectorial addition of angular momenta.
AU - Meier, Torsten
AU - Driben, R.
AU - Kartashov, Y. V.
AU - Malomed, B. A.
AU - Torner, L.
ID - 43199
IS - 2
JF - Physical review letters
TI - Soliton gyroscopes in media with spatially growing repulsive nonlinearity
VL - 112
ER -
TY - JOUR
AB - Parametric down-conversion (PDC) forms one of the basic building blocks for quantum optical experiments. However, the intrinsic multimode spectral-temporal structure of pulsed PDC often poses a severe hindrance for the direct implementation of the heralding of pure single-photon states or, for example, continuous-variable entanglement distillation experiments. To get rid of multimode effects narrowband frequency filtering is frequently applied to achieve a single-mode behavior. A rigorous theoretical description to accurately describe the effects of filtering on PDC, however, is still missing. To date, the theoretical models of filtered PDC are rooted in the discrete-variable domain and only account for filtering in the low-gain regime, where only a few photon pairs are emitted at any single point in time. In this paper we extend these theoretical descriptions and put forward a simple model, which is able to accurately describe the effects of filtering on PDC in the continuous-variable domain. This developed straightforward theoretical framework enables us to accurately quantify the tradeoff between suppression of higher-order modes, reduced purity, and lowered Einstein–Podolsky–Rosen entanglement, when narrowband filters are applied to multimode type-II PDC.
AU - Christ, Andreas
AU - Lupo, Cosmo
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Silberhorn, Christine
ID - 22956
IS - 2
JF - Physical Review A
SN - 1050-2947
TI - Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering
VL - 90
ER -
TY - CONF
AB - Ultra-intense and CEP-stable waveforms in the multi-THz range control dynamical Bloch oscillations and interband polarization in bulk GaSe, leading to the emission of all-coherent high-order harmonics covering 12.7 optical octaves from THz to VIS regimes.
AU - Meier, Torsten
AU - Hohenleutner, M.
AU - Schubert, O.
AU - Langer, F.
AU - Urbanek, B.
AU - Lange, C.
AU - Huttner, U.
AU - Golde, D.
AU - Kira, M.
AU - Koch, S.W.
AU - Huber, R.
ID - 43914
SN - 1-55752-279-0
T2 - 19th International Conference on Ultrafast Phenomena
TI - Phase-locked multi-THz high-harmonic generation by dynamical bloch oscillations in bulk semiconductors
ER -
TY - JOUR
AB - The dynamics of 3D Airy-vortex wave packets is studied under the action of strong self-focusing Kerr nonlinearity. Emissions of nonlinear 3D waves out of the main wave packets with the topological charges were demonstrated. Because of the conservation of the total angular momentum, charges of the emitted waves are equal to those carried by the parental light structure. The rapid collapse imposes a severe limitation on the propagation of multidimensional waves in Kerr media. However, the structure of the Airy beam carrier allows the coupling of light from the leading, most intense peak into neighboring peaks and consequently strongly postpones the collapse. The dependence of the critical input amplitude for the appearance of a fast collapse on the beam width is studied for wave packets with zero and nonzero topological charges. Wave packets carrying angular momentum are found to be much more resistant to the rapid collapse.
AU - Driben, Rodislav
AU - Meier, Torsten
ID - 22955
IS - 19
JF - Optics Letters
SN - 0146-9592
TI - Nonlinear dynamics of Airy-vortex 3D wave packets: emission of vortex light waves
VL - 39
ER -
TY - JOUR
AB - The dynamics of two component-coupled vectorial Airy beams is investigated. In the linear propagation regime, a complete analytic solution describes the breather-like propagation of two components that feature nondiffracting self-accelerating Airy behavior. The superposition of two beams with different input properties opens the possibility of designing more complex nondiffracting propagation scenarios. In the strongly nonlinear regime, the dynamics remain qualitatively robust as is revealed by direct numerical simulations. Because of the Kerr effect, the two beams emit solitonic breathers whose coupling period is compatible with the remaining Airy-like beams. The results of this study are relevant for the description of photonic and plasmonic beams that propagate in coupled planar waveguides, as well as for birefrigent or multiwavelength beams.
AU - Driben, R.
AU - Konotop, V. V.
AU - Meier, Torsten
ID - 22954
IS - 19
JF - Optics Letters
SN - 0146-9592
TI - Coupled Airy breathers
VL - 39
ER -
TY - CONF
AB - Optical and infrared antennas provide a promising way to couple photons in and out of nanoscale structures. As
counterpart to conventional radio antennas, they are able to increase optical felds in sub-wavelength volumes,
to enhance excitation and emission of quantum emitters or to direct light, radiated by quantum emitters. The
directed emission of these antennas has been mainly pursued by surface plasmon based devices, e.g. Yagi-Uda
like antennas, which are rather complicated due to the coupling of several metallic particles. Also, like all metallic
structures in optical or infrared regime, these devices are very sensitive to fabrication tolerances and are affected
by strong losses. It has been shown recently, that such directed emission can be accomplished by dielectric
materials as well.
In this paper we present an optimization of nanoscopic antennas in the near infrared regime starting from a
metallic Yagi-Uda structure. The optimization is done via a particle-swarm algorithm, using full time domain
finite integration simulations to obtain the characteristics of the investigated structure, also taking into account
substrates. Furthermore we present a dielectric antenna, which performs even better, due to the lack of losses
by an appropriate choice of the dielectric material. These antennas are robust concerning fabrication tolerances
and can be realized with different materials for both the antenna and the substrate, without using high index
materials.
AU - Hildebrandt, Andre
AU - Reichelt, Matthias
AU - Meier, Torsten
AU - Förstner, Jens
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ED - Song, Jin-Joo
ED - Tsen, Kong-Thon
ID - 3939
KW - tet_topic_opticalantenna
T2 - Ultrafast Phenomena and Nanophotonics XVIII
TI - Engineering plasmonic and dielectric directional nanoantennas
VL - 8984
ER -
TY - JOUR
AB - Starting from the extended Su-Schrieffer-Heeger model, multiband semiconductor Bloch equations are formulated in momentum space and applied to the analysis of the linear optical response of semiconducting carbon nanotubes (SCNTs). This formalism includes the coupling of electron-hole pair excitations between different valence and conduction bands, originating from the electron-hole Coulomb attraction. The influence of these couplings, which are referred to as nondiagonal interband Coulomb interaction (NDI-CI), on the linear excitonic absorption spectra is investigated and discussed for light fields polarized parallel to the tube direction. The results show that the intervalley NDI-CI leads to a significant increase of the band gap and a decrease of the exciton binding energy that results in a blueshift of the lowest-frequency excitonic absorption peak. The strength of these effects depends on the symmetry of the SCNT. Furthermore, for zigzag SCNTs with higher symmetry other nonintervalley NDI-CI terms also affect the spectral positions of excitonic absorption peaks.
AU - Liu, Hong
AU - Schumacher, Stefan
AU - Meier, Torsten
ID - 15864
IS - 15
JF - Physical Review B
SN - 1098-0121
TI - Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes
VL - 89
ER -
TY - JOUR
AB - Dispersion management of periodically alternating fiber sections with opposite signs of two leading dispersion terms is applied for the regeneration of self-accelerating truncated Airy pulses. It is demonstrated that for such a dispersion management scheme, the direction of the acceleration of the pulse is reversed twice within each period. In this scheme the system features light hot spots in the center of each fiber section, where the energy of the light pulse is tightly focused in a short temporal slot. Comprehensive numerical studies demonstrate a long-lasting propagation also under the influence of a strong fiber Kerr nonlinearity.
AU - Driben, R.
AU - Meier, Torsten
ID - 22958
IS - 4
JF - Physical Review A
SN - 1050-2947
TI - Regeneration of Airy pulses in fiber-optic links with dispersion management of the two leading dispersion terms of opposite signs
VL - 89
ER -