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 - Roman-Rodriguez, V AU - Brecht, Benjamin AU - Srinivasan, K AU - Silberhorn, Christine AU - Treps, N AU - Diamanti, E AU - Parigi, V ID - 22259 JF - New Journal of Physics SN - 1367-2630 TI - Continuous variable multimode quantum states via symmetric group velocity matching VL - 23 ER - TY - JOUR AU - Gil López, Jano AU - Santandrea, Matteo AU - Roland, Ganaël AU - Brecht, Benjamin AU - Eigner, Christof AU - Ricken, Raimund AU - Quiring, Viktor AU - Silberhorn, Christine ID - 22770 JF - New Journal of Physics SN - 1367-2630 TI - Improved non-linear devices for quantum applications 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 AU - Massaro, Marcello AU - Meyer-Scott, Evan AU - Montaut, Nicola AU - Herrmann, Harald AU - Silberhorn, Christine ID - 25038 JF - New Journal of Physics SN - 1367-2630 TI - Improving SPDC single-photon sources via extended heralding and feed-forward control ER - TY - JOUR AU - Ma, Xuekai AU - Kartashov, Yaroslav Y AU - Gao, Tingge AU - Schumacher, Stefan ID - 19513 JF - New Journal of Physics KW - pc2-ressources SN - 1367-2630 TI - Controllable high-speed polariton waves in a PT-symmetric lattice ER - TY - JOUR AU - Santandrea, Matteo AU - Stefszky, Michael AU - Roeland, Ganaël AU - Silberhorn, Christine ID - 26224 JF - New Journal of Physics SN - 1367-2630 TI - Characterisation of fabrication inhomogeneities in Ti:LiNbO3 waveguides ER - TY - JOUR AU - Santandrea, Matteo AU - Stefszky, Michael AU - Ansari, Vahid AU - Silberhorn, Christine ID - 26226 JF - New Journal of Physics SN - 1367-2630 TI - Fabrication limits of waveguides in nonlinear crystals and their impact on quantum optics applications ER - TY - JOUR AU - Nitsche, Thomas AU - Geib, Tobias AU - Stahl, Christoph AU - Lorz, Lennart AU - Cedzich, Christopher AU - Barkhofen, Sonja AU - Werner, Reinhard F AU - Silberhorn, Christine ID - 26508 JF - New Journal of Physics SN - 1367-2630 TI - Eigenvalue measurement of topologically protected edge states in split-step quantum walks ER - TY - JOUR AU - Ma, Xuekai AU - Kartashov, Yaroslav Y AU - Gao, Tingge AU - Schumacher, Stefan ID - 15851 JF - New Journal of Physics SN - 1367-2630 TI - Controllable high-speed polariton waves in a PT-symmetric lattice VL - 21 ER - TY - JOUR AU - Tiedau, J AU - Shchesnovich, V S AU - Mogilevtsev, D AU - Ansari, V AU - Harder, G AU - Bartley, Tim AU - Korolkova, N AU - Silberhorn, Christine ID - 9828 JF - New Journal of Physics SN - 1367-2630 TI - Quantum state and mode profile tomography by the overlap ER - TY - JOUR AB - Coherent phonons can greatly vary light–matter interaction in semiconductor nanostructures placed inside an optical resonator on a picosecond time scale. For an ensemble of quantum dots (QDs) as active laser medium, phonons are able to induce a large enhancement or attenuation of the emission intensity, as has been recently demonstrated. The physics of this coupled phonon–exciton–light system consists of various effects, which in the experiment typically cannot be clearly separated, in particular, due to the complicated sample structure a rather complex strain pulse impinges on the QD ensemble. Here we present a comprehensive theoretical study how the laser emission is affected by phonon pulses of various shapes as well as by ensembles with different spectral distributions of the QDs. This gives insight into the fundamental interaction dynamics of the coupled phonon–exciton–light system, while it allows us to clearly discriminate between two prominent effects: the adiabatic shifting of the ensemble and the shaking effect. This paves the way to a tailored laser emission controlled by phonons. AU - Wigger, Daniel AU - Czerniuk, Thomas AU - Reiter, Doris E AU - Bayer, Manfred AU - Kuhn, Tilmann ID - 6540 IS - 7 JF - New Journal of Physics SN - 1367-2630 TI - Systematic study of the influence of coherent phonon wave packets on the lasing properties of a quantum dot ensemble VL - 19 ER - TY - JOUR AU - Mogilevtsev, D AU - Teo, Y S AU - Řeháček, J AU - Hradil, Z AU - Tiedau, J AU - Kruse, R AU - Harder, G AU - Silberhorn, Christine AU - Sanchez-Soto, L L ID - 38056 IS - 9 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Extracting the physical sector of quantum states VL - 19 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 - 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 - Hamilton, Craig S AU - Barkhofen, Sonja AU - Sansoni, Linda AU - Jex, Igor AU - Silberhorn, Christine ID - 26510 JF - New Journal of Physics SN - 1367-2630 TI - Driven discrete time quantum walks ER - TY - JOUR AU - Nitsche, Thomas AU - Elster, Fabian AU - Novotný, Jaroslav AU - Gábris, Aurél AU - Jex, Igor AU - Barkhofen, Sonja AU - Silberhorn, Christine ID - 26519 JF - New Journal of Physics SN - 1367-2630 TI - Quantum walks with dynamical control: graph engineering, initial state preparation and state transfer ER - TY - JOUR AU - Luo, Kai-Hong AU - Herrmann, Harald AU - Krapick, Stephan AU - Brecht, Benjamin AU - Ricken, Raimund AU - Quiring, Viktor AU - Suche, Hubertus AU - Sohler, Wolfgang AU - Silberhorn, Christine ID - 21037 JF - New Journal of Physics SN - 1367-2630 TI - Direct generation of genuine single-longitudinal-mode narrowband photon pairs VL - 17 ER - TY - JOUR AU - Tse, Y C AU - Chan, Chris K P AU - Luk, M H AU - Kwong, N H AU - Leung, P T AU - Binder, R AU - Schumacher, Stefan ID - 15858 JF - New Journal of Physics SN - 1367-2630 TI - A population-competition model for analyzing transverse optical patterns including optical control and structural anisotropy ER - TY - JOUR AU - Bartley, Tim AU - Walmsley, Ian A ID - 16104 JF - New Journal of Physics SN - 1367-2630 TI - Directly comparing entanglement-enhancing non-Gaussian operations ER - TY - JOUR AU - Luo, Kai Hong AU - Herrmann, Harald AU - Krapick, Stephan AU - Brecht, Benjamin AU - Ricken, Raimund AU - Quiring, Viktor AU - Suche, Hubertus AU - Sohler, Wolfgang AU - Silberhorn, Christine ID - 26065 JF - New Journal of Physics SN - 1367-2630 TI - Direct generation of genuine single-longitudinal-mode narrowband photon pairs 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 - JOUR AU - Weich, T AU - Barkhofen, Sonja AU - Kuhl, U AU - Poli, C AU - Schomerus, H ID - 26512 JF - New Journal of Physics SN - 1367-2630 TI - Formation and interaction of resonance chains in the open three-disk system ER - TY - JOUR AU - Weich, Tobias AU - Barkhofen, Sonja AU - Kuhl, U AU - Poli, C AU - Schomerus, H ID - 31297 IS - 3 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Formation and interaction of resonance chains in the open three-disk system VL - 16 ER - TY - JOUR AU - Clausen, C AU - Bussières, F AU - Tiranov, A AU - Herrmann, Harald AU - Silberhorn, Christine AU - Sohler, W AU - Afzelius, M AU - Gisin, N ID - 38091 IS - 9 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - A source of polarization-entangled photon pairs interfacing quantum memories with telecom photons VL - 16 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 AU - Christ, Andreas AU - Brecht, Benjamin AU - Mauerer, Wolfgang AU - Silberhorn, Christine ID - 21042 JF - New Journal of Physics SN - 1367-2630 TI - Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime VL - 15 ER - TY - JOUR AU - Krapick, S AU - Herrmann, Harald AU - Quiring, V AU - Brecht, Benjamin AU - Suche, H AU - Silberhorn, Christine ID - 21044 JF - New Journal of Physics SN - 1367-2630 TI - An efficient integrated two-color source for heralded single photons VL - 15 ER - TY - JOUR AU - Nichele, F AU - Komijani, Y AU - Hennel, S AU - Gerl, C AU - Wegscheider, W AU - Reuter, Dirk AU - Wieck, A D AU - Ihn, T AU - Ensslin, K ID - 7294 IS - 3 JF - New Journal of Physics SN - 1367-2630 TI - Aharonov–Bohm rings with strong spin–orbit interaction: the role of sample-specific properties VL - 15 ER - TY - JOUR AU - Kruse, R AU - Katzschmann, F AU - Christ, A AU - Schreiber, A AU - Wilhelm, S AU - Laiho, K AU - Gábris, A AU - Hamilton, C S AU - Jex, I AU - Silberhorn, Christine ID - 40160 IS - 8 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Spatio-spectral characteristics of parametric down-conversion in waveguide arrays VL - 15 ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W ID - 26355 JF - New Journal of Physics SN - 1367-2630 TI - Entanglement quasiprobabilities of squeezed light ER - TY - JOUR AU - Christ, Andreas AU - Lupo, Cosmo AU - Silberhorn, Christine ID - 40170 IS - 8 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Exponentially enhanced quantum communication rate by multiplexing continuous-variable teleportation VL - 14 ER - TY - JOUR AU - Laiho, Kaisa AU - Avenhaus, Malte AU - Silberhorn, Christine ID - 40167 IS - 10 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Characteristics of displaced single photons attained via higher order factorial moments VL - 14 ER - TY - JOUR AU - Brecht, Benjamin AU - Eckstein, Andreas AU - Christ, Andreas AU - Suche, Hubertus AU - Silberhorn, Christine ID - 21045 JF - New Journal of Physics SN - 1367-2630 TI - From quantum pulse gate to quantum pulse shaper—engineered frequency conversion in nonlinear optical waveguides VL - 13 ER - TY - JOUR AU - Christ, Andreas AU - Laiho, Kaisa AU - Eckstein, Andreas AU - Cassemiro, Katiúscia N AU - Silberhorn, Christine ID - 40183 IS - 3 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Probing multimode squeezing with correlation functions VL - 13 ER - TY - JOUR AU - Rohde, Peter P AU - Schreiber, Andreas AU - Štefaňák, Martin AU - Jex, Igor AU - Silberhorn, Christine ID - 40190 IS - 1 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Multi-walker discrete time quantum walks on arbitrary graphs, their properties and their photonic implementation VL - 13 ER - TY - JOUR AU - Chen, J C H AU - Klochan, O AU - Micolich, A P AU - Hamilton, A R AU - Martin, T P AU - Ho, L H AU - Zülicke, U AU - Reuter, Dirk AU - Wieck, A D ID - 7974 IS - 3 JF - New Journal of Physics SN - 1367-2630 TI - Observation of orientation- andk-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures VL - 12 ER - TY - JOUR AU - Rizo, P J AU - Pugzlys, A AU - Slachter, A AU - Denega, S Z AU - Reuter, Dirk AU - Wieck, A D AU - van Loosdrecht, P H M AU - van der Wal, C H ID - 7992 IS - 11 JF - New Journal of Physics SN - 1367-2630 TI - Optical probing of spin dynamics of two-dimensional and bulk electrons in a GaAs/AlGaAs heterojunction system VL - 12 ER - TY - JOUR AU - Cassemiro, Katiúscia N AU - Laiho, Kaisa AU - Silberhorn, Christine ID - 40195 IS - 11 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Accessing the purity of a single photon by the width of the Hong–Ou–Mandel interference VL - 12 ER - TY - JOUR AU - Brańczyk, Agata M AU - Ralph, T C AU - Helwig, Wolfram AU - Silberhorn, Christine ID - 40199 IS - 6 JF - New Journal of Physics KW - General Physics and Astronomy SN - 1367-2630 TI - Optimized generation of heralded Fock states using parametric down-conversion VL - 12 ER - TY - JOUR AB - We demonstrate for the first time the feasibility of free space quantum key distribution with continuous variables under real atmospheric conditions. More specifically, we transmit coherent polarization states over a 100 m free space channel on the roof of our institute's building. In our scheme, signal and local oscillator (LO) are combined in a single spatial mode, which auto-compensates atmospheric fluctuations and results in an excellent interference. Furthermore, the LO acts as a spatial and spectral filter, thus allowing unrestrained daylight operation. AU - Elser, D. AU - Bartley, Tim AU - Heim, B. AU - Wittmann, Ch AU - Sych, D. AU - Leuchs, G. ID - 3094 IS - 4 JF - New Journal of Physics SN - 1367-2630 TI - Feasibility of free space quantum key distribution with coherent polarization states ER - TY - JOUR AU - Scheibner, R AU - König, M AU - Reuter, Dirk AU - Wieck, A D AU - Gould, C AU - Buhmann, H AU - Molenkamp, L W ID - 8618 JF - New Journal of Physics SN - 1367-2630 TI - Quantum dot as thermal rectifier ER - TY - JOUR AU - Padberg, Kathrin AU - Hauff, Thilo AU - Jenko, Frank AU - Junge, Oliver ID - 16648 JF - New Journal of Physics SN - 1367-2630 TI - Lagrangian structures and transport in turbulent magnetized plasmas ER - TY - JOUR AU - Bominaar-Silkens, I M A AU - Schaapman, M R AU - Zeitler, U AU - Christianen, P C M AU - Maan, J C AU - Reuter, Dirk AU - Wieck, A D AU - Schuh, D AU - Bichler, M ID - 8672 JF - New Journal of Physics SN - 1367-2630 TI - Magnetization of bilayer two-dimensional electron systems ER -