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 -