The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform

Jean-françois Roch - One of the best experts on this subject based on the ideXlab platform.

  • delayed choice test of quantum complementarity with interfering single photons
    Physical Review Letters, 2008
    Co-Authors: Vairon Jacques, Frederic Grosshans, François Treussart, Philippe Grangier, E. Wu, Alain Aspect, Jean-françois Roch
    Abstract:

    We report an experimental test of complementarity using clock-triggered single-photon pulses emitted by an individual N-V color center in a diamond nanocrystal. The single photons are sent into a Mach-Zehnder interferometer with an output Beamsplitter of adjustable reflection coefficient R. In addition, the choice of introducing or removing this Beamsplitter is random and relativistically space-like separated from the entering of the photon inside the interferometer, as required for the Wheeler's delayed-choice regime. Each set value of R allows us to observe interference with visibility V and to obtain incomplete which-path information characterized by the distinguishability D. The measured values of V and D are found to obey the complementarity relation V²+D²=<1.

  • Delayed-choice test of complementarity with single photons
    Physical Review Letters, 2008
    Co-Authors: Vincent Jacques, Frederic Grosshans, François Treussart, Philippe Grangier, Alain Aspect, Jean-françois Roch
    Abstract:

    We report an experimental test of complementarity using clock-triggered single-photon pulses emitted by an individual N-V color center in a diamond nanocrystal. The single photons are sent into a Mach-Zehnder interferometer with an output Beamsplitter of adjustable reflection coefficient R. In addition, the choice of introducing or removing this Beamsplitter is random and relativistically space-like separated from the entering of the photon inside the interferometer, as required for the Wheeler's delayed-choice regime. Each set value of R allows us to observe interference with visibility V and to obtain incomplete which-path information characterized by the distinguishability D. The measured values of V and D are found to obey the complementarity relation V²+D²=

Jiubin Tan - One of the best experts on this subject based on the ideXlab platform.

  • use of conducting inductive meshes with periodic rectangle units as an infrared microwave dual mode detecting Beamsplitter
    Journal of Optics, 2011
    Co-Authors: Yongmeng Liu, Jiubin Tan
    Abstract:

    By optimizing the periods along the x and y axes of conducting inductive meshes with periodic rectangle units to minimize the differences in microwave reflectivity between the perpendicular and parallel polarizations, conducting inductive meshes with periodic rectangle units can be made useful as an infrared/microwave Beamsplitter for the construction of a dual-mode detecting system. A conducting inductive rectangle-unit mesh Beamsplitter is designed and fabricated using a laser directing writing technique. The microwave reflectivity and infrared transmissivity coefficients of the mesh Beamsplitter sample are measured using a scalar network analyzer and a Fourier infrared spectrometer. Measurement and simulation results indicate that the microwave reflectivity and infrared transmissivity coefficients of infrared/microwave mesh Beamsplitter are higher than − 1.5 dB and − 0.7 dB, respectively. It can therefore be concluded that conducting inductive meshes with periodic rectangle units can be used as an infrared/microwave Beamsplitter in a dual-mode detecting system.

  • Use of conducting inductive meshes with periodic rectangle units as an infrared/microwave dual-mode detecting Beamsplitter
    Journal of Optics, 2011
    Co-Authors: Yongmeng Liu, Jiubin Tan
    Abstract:

    By optimizing the periods along the x and y axes of conducting inductive meshes with periodic rectangle units to minimize the differences in microwave reflectivity between the perpendicular and parallel polarizations, conducting inductive meshes with periodic rectangle units can be made useful as an infrared/microwave Beamsplitter for the construction of a dual-mode detecting system. A conducting inductive rectangle-unit mesh Beamsplitter is designed and fabricated using a laser directing writing technique. The microwave reflectivity and infrared transmissivity coefficients of the mesh Beamsplitter sample are measured using a scalar network analyzer and a Fourier infrared spectrometer. Measurement and simulation results indicate that the microwave reflectivity and infrared transmissivity coefficients of infrared/microwave mesh Beamsplitter are higher than − 1.5 dB and − 0.7 dB, respectively. It can therefore be concluded that conducting inductive meshes with periodic rectangle units can be used as an infrared/microwave Beamsplitter in a dual-mode detecting system.

Yongmeng Liu - One of the best experts on this subject based on the ideXlab platform.

  • use of conducting inductive meshes with periodic rectangle units as an infrared microwave dual mode detecting Beamsplitter
    Journal of Optics, 2011
    Co-Authors: Yongmeng Liu, Jiubin Tan
    Abstract:

    By optimizing the periods along the x and y axes of conducting inductive meshes with periodic rectangle units to minimize the differences in microwave reflectivity between the perpendicular and parallel polarizations, conducting inductive meshes with periodic rectangle units can be made useful as an infrared/microwave Beamsplitter for the construction of a dual-mode detecting system. A conducting inductive rectangle-unit mesh Beamsplitter is designed and fabricated using a laser directing writing technique. The microwave reflectivity and infrared transmissivity coefficients of the mesh Beamsplitter sample are measured using a scalar network analyzer and a Fourier infrared spectrometer. Measurement and simulation results indicate that the microwave reflectivity and infrared transmissivity coefficients of infrared/microwave mesh Beamsplitter are higher than − 1.5 dB and − 0.7 dB, respectively. It can therefore be concluded that conducting inductive meshes with periodic rectangle units can be used as an infrared/microwave Beamsplitter in a dual-mode detecting system.

  • Use of conducting inductive meshes with periodic rectangle units as an infrared/microwave dual-mode detecting Beamsplitter
    Journal of Optics, 2011
    Co-Authors: Yongmeng Liu, Jiubin Tan
    Abstract:

    By optimizing the periods along the x and y axes of conducting inductive meshes with periodic rectangle units to minimize the differences in microwave reflectivity between the perpendicular and parallel polarizations, conducting inductive meshes with periodic rectangle units can be made useful as an infrared/microwave Beamsplitter for the construction of a dual-mode detecting system. A conducting inductive rectangle-unit mesh Beamsplitter is designed and fabricated using a laser directing writing technique. The microwave reflectivity and infrared transmissivity coefficients of the mesh Beamsplitter sample are measured using a scalar network analyzer and a Fourier infrared spectrometer. Measurement and simulation results indicate that the microwave reflectivity and infrared transmissivity coefficients of infrared/microwave mesh Beamsplitter are higher than − 1.5 dB and − 0.7 dB, respectively. It can therefore be concluded that conducting inductive meshes with periodic rectangle units can be used as an infrared/microwave Beamsplitter in a dual-mode detecting system.

Scott Aaronson - One of the best experts on this subject based on the ideXlab platform.

  • generation of universal linear optics by any beam splitter
    Physical Review A, 2014
    Co-Authors: Adam Bouland, Scott Aaronson
    Abstract:

    In 1994, Reck et al. showed how to realize any unitary transformation on a single photon using a product of Beamsplitters and phaseshifters. Here we show that any single Beamsplitter that nontrivially mixes two modes, also densely generates the set of unitary transformations (or orthogonal transformations, in the real case) on the single-photon subspace with m>=3 modes. (We prove the same result for any two-mode real optical gate, and for any two-mode optical gate combined with a generic phaseshifter.) Experimentally, this means that one does not need tunable Beamsplitters or phaseshifters for universality: any nontrivial Beamsplitter is universal for linear optics. Theoretically, it means that one cannot produce "intermediate" models of linear optical computation (analogous to the Clifford group for qubits) by restricting the allowed Beamsplitters and phaseshifters: there is a dichotomy; one either gets a trivial set or else a universal set. No similar classification theorem for gates acting on qubits is currently known. We leave open the problem of classifying optical gates that act on three or more modes.

  • Any Beamsplitter Generates Universal Quantum Linear Optics
    2013
    Co-Authors: Adam Bouland, Scott Aaronson
    Abstract:

    In 1994, Reck et al. showed how to realize any linear-optical unitary transformation using a product of Beamsplitters and phaseshifters. Here we show that any single Beamsplitter that nontrivially mixes two modes, also densely generates the set of m × m unitary transformations (or orthogonal transformations, in the real case) on m ≥ 3 modes. (We prove the same result for any 2-mode real optical gate, and for any 2-mode optical gate combined with a generic phaseshifter.) Experimentally, this means that one does not need tunable Beamsplitters or phaseshifters for universality: any nontrivial Beamsplitter is universal. Theoretically, it means that one cannot produce “intermediate” models of quantum-optical computation (analogous to the Clifford group for qubits) by restricting the allowed Beamsplitters and phaseshifters: there is a dichotomy; one either gets a trivi al set or else a universal set. No similar classification theorem for gates acting on qubits is currently know n. We leave open the problem of classifying optical gates that act on 3 or more modes.

Jin Zhang - One of the best experts on this subject based on the ideXlab platform.