Fakultät für Mathematik und Physik

 

Recent Submissions

  • Knoop, Helge; Ament, Felix; Maronga, Björn (Berlin : European Meteorological Society, 2019)
    Wind gusts can have destructive effects on many structures and objects deemed valuable to humans. The aviation industry, for example, views gusts as a major hazard. Their destructive effect is proportional to the momentum ...
  • Melchert, O.; Roth, B.; Morgner, U.; Demircan, A. (Amsterdam : Elsevier B.V., 2019)
    A Python package for the calculation of spectrograms with optimized time and frequency resolution for application in the analysis of numerical simulations on ultrashort pulse propagation is presented. Gabor’s uncertainty ...
  • Zheng, Lei; Zywietz, Urs; Evlyukhin, Andrey; Roth, Bernhard; Overmeyer, Ludger; Reinhardt, Carsten (Basel : MDPI AG, 2019)
    Special integrated photonic surface structures composed of a dielectric semicircle ridge and a dielectric block placed on a metal substrate are proposed for the investigation of surface plasmon polariton (SPP) reflection ...
  • Werner, A. H.; Franz, T.; Werner, R.F. (College Park, MD : American Physical Society, 2009)
    We propose a quantum key distribution protocol based on a quantum retrodiction protocol, known as the Mean King problem. The protocol uses a two way quantum channel. We show security against coherent attacks in a ...
  • Junge, M.; Navascues, M.; Palazuelos, C.; Perez-Garcia, D.; Scholz, V. B.; Werner, R.F. (College Park, MD : American Institute of Physics, 2011)
    We show that Tsirelson's problem concerning the set of quantum correlations and Connes' embedding problem on finite approximations in von Neumann algebras (known to be equivalent to Kirchberg's QWEP conjecture) are essentially ...
  • Eberle, Tobias; Händchen, Vitus; Duhme, Jörg; Franz,Torsten; Werner, Reinhard F.; Schnabel, Roman (College Park, MD : American Physical Society, 2011)
    Einstein-Podolsky-Rosen (EPR) entanglement is a criterion that is more demanding than just certifying entanglement. We theoretically and experimentally analyze the low-resource generation of bipartite continuous-variable ...
  • Matjeschk, R.; Ahlbrecht, A.; Enderlein, M.; Cedzich, Ch.; Werner, A.H.; Keyl, M.; Schaetz, T.; Werner, R.F. (College Park, MD : American Physical Society, 2012)
    Quantum walks have by now been realized in a large variety of different physical settings. In some of these, particularly with trapped ions, the walk is implemented in phase space, where the corresponding position states ...
  • Kiukas, J.; Werner, R.F. (College Park, MD : American Institute of Physics, 2010)
    We show that it is possible to find maximal violations of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality using only position measurements on a pair of entangled nonrelativistic free particles. The device settings ...
  • Gütschow, Johannes; Uphoff, Sonja; Werner, Reinhard F.; Zimborás, Zoltán (College Park, MD : American Institute of Physics, 2010)
    We consider Clifford quantum cellular automata (CQCAs) and their time-evolution. CQCAs are an especially simple type of quantum cellular automata, yet they show complex asymptotics and can even be a basic ingredient for ...
  • Franz, T.; Furrer, F.; Werner, R.F. (College Park, MD : American Physical Society, 2011)
    We investigate a fundamental property of device-independent security in quantum cryptography by characterizing probability distributions which are necessarily independent of the measurement results of any eavesdropper. We ...
  • Kiukas, J.; Ruschhaupt, A.; Werner, R.F. (College Park, MD : American Institute of Physics, 2013)
    We present a general theoretical framework for treating particle beams as time-stationary limits of many particle systems. Due to stationarity, the total particle number diverges, and a description in Fock space is no ...
  • Furrer, F.; Franz, T.; Berta, M.; Leverrier, A.; Scholz, V. B.; Tomamichel, M.; Werner, R.F. (College Park, MD : American Physical Society, 2012)
    We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of two-mode squeezed vacuum states measured via homodyne detection. We employ a version of the entropic ...
  • Kiukas, J.; Lahti, P.; Schultz, J.; Werner, R.F. (College Park, MD : American Institute of Physics, 2012)
    In the nonrelativistic setting with finitely many canonical degrees of freedom, a shift-covariant phase space observable is uniquely characterized by a positive operator of trace one and, in turn, by the Fourier-Weyl ...
  • Genske, Maximilian; Alt, Wolfgang; Steffen, Andreas; Werner, Albert H.; Werner, Reinhard F.; Meschede, Dieter; Alberti, Andrea (College Park, MD : American Physical Society, 2013)
    We report on the experimental realization of electric quantum walks, which mimic the effect of an electric field on a charged particle in a lattice. Starting from a textbook implementation of discrete-time quantum walks, ...
  • Busch, Paul; Lahti,Pekka; Werner, Reinhard F. (College Park, MD : American Physical Society, 2013)
    While the slogan “no measurement without disturbance” has established itself under the name of the Heisenberg effect in the consciousness of the scientifically interested public, a precise statement of this fundamental ...
  • Cedzich, C.; Rybár, T.; Werner, A. H.; Alberti, A.; Genske, M.; Werner, R.F. (College Park, MD : American Physical Society, 2013)
    We study one-dimensional quantum walks in a homogenous electric field. The field is given by a phase which depends linearly on position and is applied after each step. The long time propagation properties of this system, ...
  • Busch, Paul; Lahti, Pekka; Werner, Reinhard F. (College Park, MD : American Physical Society, 2014)
    Reports on experiments recently performed in Vienna [Erhard et al., Nature Phys. 8, 185 (2012)] and Toronto [Rozema et al., Phys. Rev. Lett. 109, 100404 (2012)] include claims of a violation of Heisenberg's error-disturbance ...
  • Busch, Paul; Lahti,Pekka; and Reinhard F. Werner (College Park, MD : American Physical Society, 2014)
    Recent years have witnessed a controversy over Heisenberg’s famous error-disturbance relation. Here the conflict is resolved by way of an analysis of the possible conceptualizations of measurement error and disturbance in ...
  • Busch, Paul; Lahti, Pekka; Werner, Reinhard F. (College Park, MD : American Institute of Physics, 2014)
    Measurement uncertainty relations are quantitative bounds on the errors in an approximate joint measurement of two observables. They can be seen as a generalization of the error/disturbance tradeoff first discussed ...
  • Furrer, F.; Franz, T.; Berta, M.; Leverrier, A.; Scholz, V.B.; Tomamichel, M.; Werner, R.F. (College Park, MD : American Physical Society, 2012)
    We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of two-mode squeezed vacuum states measured via homodyne detection. We employ a version of the entropic ...

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