TY - JOUR
AU - Rose, Hendrik
AU - Vasil'ev, A. N.
AU - Tikhonova, O. V.
AU - Meier, Torsten
AU - Sharapova, Polina
ID - 37280
IS - 1
JF - Physical Review A
SN - 2469-9926
TI - Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field
VL - 107
ER -
TY - CONF
AB - The nonlinear optical response of quantum well excitons is investigated experimentally using polarization resolved four wave mixing, optical-pump optical-probe, and optical-pump Terahertz-probe spectroscopy. The four-wave mixing data reveal clear signatures of coherent biexcitons which concur with straight-forward polarization selection rules at the Γ point. The type-I samples show the well-established time-domain beating signatures in the transients as well as the corresponding spectral signatures clearly. The latter are also present in type-II samples; however, the smaller exciton and biexciton binding energies in these structures infer longer beating times which, in turn, are accompanied by faster dephasing of the type-II exciton coherences. Furthermore, the THz absorption following spectrally narrow, picosecond excitation at energies in the vicinity of the 1s exciton resonance are discussed. Here, the optical signatures yield the well-established redshifts and blueshifts for the appropriate polarization geometries in type-I quantum well samples also termed “AC Stark Effect”. The THz probe reveals intriguing spectral features which can be ascribed to coherent negative absorption following an excitation into a virtual state for an excitation below the 1s exciton resonance. Furthermore, the scattering and ionization of excitons is discussed for several excitation geometries yielding control rules for elastic and inelastic quasiparticle collisions.
AU - Meier, Torsten
AU - Stein, M.
AU - Schäfer, F.
AU - Anders, D.
AU - Littmann, J. H.
AU - Fey, M.
AU - Trautmann, Alexander
AU - Ngo, C.
AU - Steiner, J. T.
AU - Reichelt, Matthias
AU - Fuchs, C.
AU - Volz, K.
AU - Chatterjee, S.
ID - 43189
T2 - Ultrafast Phenomena and Nanophotonics XXVII
TI - Experimental studies of the excitonic nonlinear response of GaAs-based type-I and type-II quantum well structures interacting with optical and terahertz fields
VL - 12419
ER -
TY - CONF
AB - Anomalous currents refer to electronic currents that flow perpendicularly to the direction of the accelerating electric field. Such anomalous currents can be generated when Terahertz fields are applied after an optical interband excitation of GaAs quantum wells. The underlying processes are investigated by numerical solutions of the semiconductor Bloch equations in the length gauge. Excitonic effects are included by treating the manybody Coulomb interaction in time-dependent Hartree-Fock approximation and additionally also carrier-phonon scattering processes are considered. The band structure and matrix elements are obtained from a 14-band k · p model within the envelope function approximation. The random phase factors of the matrix elements that appear due to the separate numerical diagonalization at each k-point are treated by applying a smooth gauge transformation. We present the macroscopic Berry curvature and anomalous current transients with and without excitonic effects. It is demonstrated that the resonant optical excitation of excitonic resonances can significantly enhance the Berry curvature and the anomalous currents.
AU - Meier, Torsten
AU - Ngo, C.
AU - Priyadarshi, S.
AU - Duc, H. T.
AU - Bieler, M.
ID - 43191
T2 - Ultrafast Phenomena and Nanophotonics XXVII
TI - Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells
VL - 12419
ER -
TY - CONF
AB - The nonlinear optical response of quantum well excitons excited by optical fields is analyzed by numerical solutions of the semiconductor Bloch equations. Differential absorption spectra are computed for resonant pumping at the exciton resonance and the dependence of the absorption changes on the polarization directions of the pump and probe pulses is investigated. Coherent biexcitonic many-body correlations are included in our approach up to third-order in the optical fields. Results are presented for spatially-direct type-I and spatiallyindirect type-II quantum well systems. Due to the spatial inhomogeneity, in type-II structures a finite coupling between excitons of opposite spins exists already on the Hartree-Fock level and contributes to the absorption changes for the case of opposite circularly polarized pump and probe pulses.
AU - Meier, Torsten
AU - Trautmann, Alexander
AU - Stein, M.
AU - Schäfer, F.
AU - Anders, D.
AU - Ngo, C.
AU - Steiner, J. T.
AU - Reichelt, Matthias
AU - Chatterjee, S.
ID - 43190
T2 - Ultrafast Phenomena and Nanophotonics XXVII
TI - Analysis of the nonlinear optical response of excitons in type-I and type-II quantum wells including many-body correlations
VL - 12419
ER -
TY - JOUR
AU - Meier, Torsten
AU - Schäfer, F.
AU - Stein, M.
AU - Lorenz, J.
AU - Dobener, F.
AU - Ngo, C.
AU - Steiner, J. T.
AU - Fuchs, C.
AU - Stolz, W.
AU - Volz, K.
AU - Hader, J.
AU - Moloney, J.V.
AU - Koch, S.W.
AU - Chatterjee, S.
ID - 43139
IS - 8
JF - Applied Physics Letters
TI - Gain recovery dynamics in active type-II semiconductor heterostructures
VL - 122
ER -
TY - GEN
AU - Meier, Torsten
AU - Grisard, S.
AU - Trifonov, A.V.
AU - Rose, Hendrik
AU - Reichhardt, R.
AU - Reichelt, Matthias
AU - Schneider, C.
AU - Kamp, M.
AU - Höfling, S.
AU - Bayer, M.
AU - Akimov, I.A
ID - 43132
T2 - arxiv:2302.02480
TI - Temporal sorting of optical multi-wave-mixing processes in semiconductor quantum dots
ER -
TY - CONF
AB - The nonlinear optical response of an ensemble of semiconductor quantum dots is analyzed by wave-mixing processes, where we focus on four-wave mixing with two incident pulses. Wave-mixing experiments are often described with semiclassical models, where the light is modeled classically and the material quantum mechanically. Here, however, we use a fully quantized model, where the light is given by a quantum state of light. Quantum light involves more degrees of freedom than classical light as e.g., its photon statistics and quantum correlations, which is a promising resource for quantum devices, such as quantum memories. The light-matter interaction is treated with a Jaynes-Cummings type model and the quantum field is given by a single mode since the quantum dots are embedded in a microcavity. We present numerical simulations of the four-wave-mixing response of a homogeneous system for pulse sequences and find a significant dependence of the result on the photon statistics of the incident pulses. The model constitutes a problem with a large state space which arises from the frequency distribution of the transition energies of the inhomogeneously broadened quantum dot ensemble that is coupled with a quantum light mode. Here we approximate the dynamics by summing over individual quantum dot-microcavity systems. Photon echoes arising from the excitation with different quantum states of light are simulated and compared.
AU - Rose, Hendrik
AU - Grisard, S.
AU - Trifonov, A. V.
AU - Reichhardt, R.
AU - Reichelt, Matthias
AU - Bayer, M.
AU - Akimov, I. A.
AU - Meier, Torsten
ID - 43192
T2 - Ultrafast Phenomena and Nanophotonics XXVII
TI - Theoretical analysis of four-wave mixing on semiconductor quantum dot ensembles with quantum light
VL - 12419
ER -
TY - JOUR
AB - Since high-order harmonic generation (HHG) from atoms depends sensitively on the polarization of the driving laser field, the polarization gating (PG) technique was developed and applied successfully to generate isolated attosecond pulses from atomic gases. The situation is, however, different in solid-state systems as it has been demonstrated that due to collisions with neighboring atomic cores of the crystal lattice strong HHG can be generated even by elliptically- and circularly-polarized laser fields. Here we apply PG to solid-state systems and find that the conventional PG technique is inefficient for the generation of isolated ultrashort harmonic pulse bursts. In contrast, we demonstrate that a polarization-skewed laser pulse is able to confine the harmonic emission to a time window of less than one-tenth of the laser cycle. This method provides a novel way to control HHG and to generate isolated attosecond pulses in solids.
AU - Song, Xiaohong
AU - Yang, Shidong
AU - Wang, Guifang
AU - Lin, Jianpeng
AU - Wang, Liang
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 45704
IS - 12
JF - Optics Express
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1094-4087
TI - Control of the electron dynamics in solid-state high harmonic generation on ultrafast time scales by a polarization-skewed laser pulse
VL - 31
ER -
TY - JOUR
AU - Zuo, Ruixin
AU - Song, Xiaohong
AU - Ben, Shuai
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 45703
IS - 2
JF - Physical Review Research
KW - General Physics and Astronomy
SN - 2643-1564
TI - Revealing the nonadiabatic tunneling dynamics in solid-state high harmonic generation
VL - 5
ER -
TY - JOUR
AU - Belobo, D. Belobo
AU - Meier, Torsten
ID - 45709
JF - Results in Physics
KW - General Physics and Astronomy
SN - 2211-3797
TI - Manipulation of nonautonomous nonlinear wave solutions of the generalized coupled Gross–Pitaevskii equations with spin–orbit interaction and weak Raman couplings
ER -
TY - JOUR
AU - Ali, Usman
AU - Holthaus, Martin
AU - Meier, Torsten
ID - 49059
IS - 4
JF - Physical Review Research
KW - General Physics and Astronomy
SN - 2643-1564
TI - Chirped Bloch-harmonic oscillations in a parametrically forced optical lattice
VL - 5
ER -
TY - JOUR
AU - Ali, Usman
AU - Holthaus, Martin
AU - Meier, Torsten
ID - 52122
IS - 4
JF - Physical Review Research
KW - General Physics and Astronomy
SN - 2643-1564
TI - Chirped Bloch-harmonic oscillations in a parametrically forced optical lattice
VL - 5
ER -
TY - DATA
AU - Meier, Torsten
ID - 52124
TI - Chirped Bloch-harmonic oscillations in a parametrically forced optical lattice
ER -
TY - JOUR
AB - Abstract
The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-Q cavities which strongly enhance the light–matter coupling. Cavities with low Q-factors are generally given less attention due to their high losses that quickly destroy quantum systems. However, bad cavities can be utilized for several applications, where lower Q-factors are required, e.g., to increase the spectral width of the cavity mode. In this work, we demonstrate that low-Q cavities can be beneficial for preparing specific electronic steady states when certain quantum states of light are applied. We investigate the interaction between quantum light with various statistics and matter represented by a Λ-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We show that cavity losses lead to non-trivial electronic steady states that can be controlled by the loss rate and the initial statistics of the quantum fields. We discuss the mechanism of the formation of such steady states on the basis of the equations of motion and present both analytical expressions and numerical simulations for such steady states.
AU - Rose, Hendrik
AU - Tikhonova, O V
AU - Meier, Torsten
AU - Sharapova, Polina
ID - 37318
IS - 6
JF - New Journal of Physics
KW - General Physics and Astronomy
SN - 1367-2630
TI - Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities
VL - 24
ER -
TY - JOUR
AU - Grisard, S.
AU - Rose, Hendrik
AU - Trifonov, A. V.
AU - Reichhardt, R.
AU - Reiter, D. E.
AU - Reichelt, Matthias
AU - Schneider, C.
AU - Kamp, M.
AU - Höfling, S.
AU - Bayer, M.
AU - Meier, Torsten
AU - Akimov, I. A.
ID - 37319
IS - 20
JF - Physical Review B
SN - 2469-9950
TI - Multiple Rabi rotations of trions in InGaAs quantum dots observed by photon echo spectroscopy with spatially shaped laser pulses
VL - 106
ER -
TY - CONF
AU - Trautmann, Alexander
AU - Zuo, Ruixin
AU - Wang, Guifang
AU - Hannes, Wolf-Rüdiger
AU - Yang, Shidong
AU - Thong, Le Huu
AU - Ngo, Cong
AU - Steiner, Johannes
AU - Ciappina, Marcelo
AU - Reichelt, Matthias
AU - Duc, Huynh Thanh
AU - Song, Xiaohong
AU - Yang, Weifeng
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 37329
T2 - Ultrafast Phenomena and Nanophotonics XXVI
TI - Microscopic simulations of high harmonic generation from semiconductors
VL - 11999
ER -
TY - CONF
AU - Rose, Hendrik
AU - Tikhonova, Olga V.
AU - Meier, Torsten
AU - Sharapova, Polina
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 37327
T2 - Ultrafast Phenomena and Nanophotonics XXVI
TI - Theoretical analysis of correlations between two quantum fields exciting a three-level system using the cluster-expansion approach
VL - 11999
ER -
TY - JOUR
AU - Paul, J.
AU - Rose, Hendrik
AU - Swagel, E.
AU - Meier, Torsten
AU - Wahlstrand, J. K.
AU - Bristow, A. D.
ID - 37323
IS - 11
JF - Physical Review B
SN - 2469-9950
TI - Coherent contributions to population dynamics in a semiconductor microcavity
VL - 105
ER -
TY - GEN
AU - Meier, Torsten
AU - Ali, Usman
ID - 37325
T2 - Condensed Matter
TI - Super-Bloch oscillations with parametric modulation of a parabolic trap
ER -
TY - CONF
AB - We demonstrate theoretically and experimentally complex correlations in the photon numbers of two-mode quantum states using measurement-induced nonlinearity. For this, we combine the interference of coherent states and single photons with photon sub-traction.
AU - Meier, Torsten
AU - Hoepker, Jan Philipp
AU - Protte, Maximilian
AU - Eigner, Christof
AU - Silberhorn, Christine
AU - Sharapova, Polina R.
AU - Sperling, Jan
AU - Bartley, Tim
ID - 43744
SN - 978-1-957171-05-0
T2 - Conference on Lasers and Electro-Optics: Applications and Technology
TI - Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity
ER -
TY - JOUR
AB - High harmonic generation (HHG) from solids shows great application prospects in compact short-wavelength light sources and as a tool for imaging the dynamics in crystals with subnanometer spatial and attosecond temporal resolution. However, the underlying collision dynamics behind solid HHG is still intensively debated and no direct mapping relationship between the collision dynamics with band structure has been built. Here, we show that the electron and its associated hole can be elastically scattered by neighboring atoms when their wavelength approaches the atomic size. We reveal that the elastic scattering of electron/hole from neighboring atoms can dramatically influence the electron recombination with its left-behind hole, which turns out to be the fundamental reason for the anisotropic interband HHG observed recently in bulk crystals. Our findings link the electron/hole backward scattering with Van Hove singularities and forward scattering with critical lines in the band structure and thus build a clear mapping between the band structure and the harmonic spectrum. Our work provides a unifying picture for several seemingly unrelated experimental observations and theoretical predictions, including the anisotropic harmonic emission in MgO, the atomic-like recollision mechanism of solid HHG, and the delocalization of HHG in ZnO. This strongly improved understanding will pave the way for controlling the solid-state HHG and visualizing the structure-dependent electron dynamics in solids.
AU - Zuo, Ruixin
AU - Trautmann, Alexander
AU - Wang, Guifang
AU - Hannes, Wolf-Rüdiger
AU - Yang, Shidong
AU - Song, Xiaohong
AU - Meier, Torsten
AU - Ciappina, Marcelo
AU - Duc, Huynh Thanh
AU - Yang, Weifeng
ID - 37331
JF - Ultrafast Science
SN - 2765-8791
TI - Neighboring Atom Collisions in Solid-State High Harmonic Generation
VL - 2021
ER -
TY - JOUR
AB - AbstractMethylammonium lead iodide perovskite (MAPbI3) is renowned for an impressive power conversion efficiency rise and cost-effective fabrication for photovoltaics. In this work, we demonstrate that polycrystalline MAPbI3s undergo drastic changes in optical properties at moderate field strengths with an ultrafast response time, via transient Wannier Stark localization. The distinct band structure of this material - the large lattice periodicity, the narrow electronic energy bandwidths, and the coincidence of these two along the same high-symmetry direction – enables relatively weak fields to bring this material into the Wannier Stark regime. Its polycrystalline nature is not detrimental to the optical switching performance of the material, since the least dispersive direction of the band structure dominates the contribution to the optical response, which favors low-cost fabrication. Together with the outstanding photophysical properties of MAPbI3, this finding highlights the great potential of this material in ultrafast light modulation and novel photonic applications.
AU - Berghoff, Daniel
AU - Bühler, Johannes
AU - Bonn, Mischa
AU - Leitenstorfer, Alfred
AU - Meier, Torsten
AU - Kim, Heejae
ID - 37338
IS - 1
JF - Nature Communications
KW - General Physics and Astronomy
KW - General Biochemistry
KW - Genetics and Molecular Biology
KW - General Chemistry
KW - Multidisciplinary
SN - 2041-1723
TI - Low-field onset of Wannier-Stark localization in a polycrystalline hybrid organic inorganic perovskite
VL - 12
ER -
TY - JOUR
AU - Thong, Le Huu
AU - Ngo, Cong
AU - Duc, Huynh Thanh
AU - Song, Xiaohong
AU - Meier, Torsten
ID - 23477
JF - Physical Review B
SN - 2469-9950
TI - Microscopic analysis of high harmonic generation in semiconductors with degenerate bands
VL - 103
ER -
TY - CONF
AB - Population/mixing-time-dependent two-dimensional coherent spectra are presented for exciton-polaritons in a microcavity. Theory based on dynamically-controlled truncation reveals coherent and incoherent contributions to the decay dynamics.
AU - Meier, Torsten
AU - Paul, Jagannath
AU - Rose, Hendrik
AU - Wahlstrand, Jared K
AU - Bristow, Alan D
ID - 43746
SN - 978-1-55752-308-2
T2 - Frontiers in Optics
TI - Coherent and incoherent contribution of population dynamics of semiconductor exciton-polaritons
ER -
TY - CONF
AU - Reichelt, Matthias
AU - Rose, Hendrik
AU - Kosarev, Alexander N.
AU - Poltavtsev, Sergey V.
AU - Bayer, Manfred
AU - Akimov, Ilya A.
AU - Schneider, Christian
AU - Kamp, Martin
AU - Höfling, Sven
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 23474
T2 - Ultrafast Phenomena and Nanophotonics XXV
TI - Controlling the emission time of photon echoes by optical freezing of exciton dephasing and rephasing in quantum-dot ensembles
VL - 11684
ER -
TY - JOUR
AU - Rose, Hendrik
AU - Popolitova, D. V.
AU - Tikhonova, O. V.
AU - Meier, Torsten
AU - Sharapova, Polina
ID - 23478
JF - Physical Review A
SN - 2469-9926
TI - Dark-state and loss-induced phenomena in the quantum-optical regime of Λ-type three-level systems
VL - 103
ER -
TY - JOUR
AU - Belobo, Didier Belobo
AU - Meier, Torsten
ID - 23473
JF - New Journal of Physics
SN - 1367-2630
TI - Approximate nonlinear wave solutions of the coupled two-component Gross–Pitaevskii equations with spin–orbit interaction
VL - 23
ER -
TY - JOUR
AB - Uniaxial anisotropy in nonlinear birefringent crystals limits the efficiency of nonlinear optical interactions and breaks the spatial symmetry of light generated in the parametric down-conversion (PDC) process. Therefore, this effect is usually undesirable and must be compensated for. However, high gain may be used to overcome the destructive role of anisotropy in order to generate bright two-mode correlated twin-beams. In this work, we provide a rigorous theoretical description of the spatial properties of bright squeezed light in the presence of strong anisotropy. We investigate a single crystal and a system of two crystals with an air gap (corresponding to a nonlinear SU(1,1) interferometer) and demonstrate the generation of bright correlated twin-beams in such configurations at high gain due to anisotropy. We explore the mode structure of the generated light and show how anisotropy, together with crystal spacing, can be used for radiation shaping.
AU - Riabinin, M.
AU - Sharapova, Polina
AU - Meier, Torsten
ID - 37334
IS - 14
JF - Optics Express
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1094-4087
TI - Bright correlated twin-beam generation and radiation shaping in high-gain parametric down-conversion with anisotropy
VL - 29
ER -
TY - CONF
AU - Rose, Hendrik
AU - Paul, Jagannath
AU - Wahlstrand, Jared K.
AU - Bristow, Alan D.
AU - Meier, Torsten
ED - Betz, Markus
ED - Elezzabi, Abdulhakem Y.
ID - 23475
T2 - Ultrafast Phenomena and Nanophotonics XXV
TI - Theoretical analysis and simulations of two-dimensional Fourier transform spectroscopy performed on exciton-polaritons of a quantum-well microcavity system
VL - 11684
ER -
TY - JOUR
AU - Krauss-Kodytek, L.
AU - Hannes, W.-R.
AU - Meier, Torsten
AU - Ruppert, C.
AU - Betz, M.
ID - 37333
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 - 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 -