The Experts below are selected from a list of 71391 Experts worldwide ranked by ideXlab platform

Philippe Grangier - One of the best experts on this subject based on the ideXlab platform.

  • room temperature triggered single Photon Source in the near infrared
    New Journal of Physics, 2007
    Co-Authors: E. Wu, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, Gérard Roger, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state triggered single-Photon Source with narrow emission in the near infrared at room temperature. It is based on the photoluminescence of a single nickel–nitrogen NE8 colour centre in a chemical vapour deposited diamond nanocrystal. Stable single-Photon emission has been observed in the photoluminescence under both continuous-wave and pulsed excitations. The realization of this Source represents a step forward in the application of diamond-based single-Photon Sources to quantum key distribution (QKD) under practical operating conditions.

  • triggered single Photon Source based on photoluminescence of single nickel related colour centres in cvd grown nanodiamonds
    Annales De Physique, 2007
    Co-Authors: E. Wu, Vairon Jacques, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state single-Photon Source in the near infrared regime at room temperature. It is based on the photoluminescence of a single nickel-related colour centre in a CVD grown diamond nanocrystal. Antibunching has been observed in the fluorescence light, with which we demonstrate a triggered single-Photon Source at room temperature.

  • Experimental open air quantum key distribution with a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Rosa Tualle-brouri, Philippe Grangier
    Abstract:

    We present a full implementation of a quantum key distribution (QKD) system with a single Photon Source, operating at night in open air. The single Photon Source at the heart of the functional and reliable setup relies on the pulsed excitation of a single nitrogen-vacancy color center in diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring longer distance performance of our system. For strong attenuation, the use of pure single Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • Experimental open-air quantum key distribution with a single-Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, R. Brouri-tualle, R Brouritualle, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Philippe Grangier
    Abstract:

    We describe the implementation of a quantum key distribution (QKD) system using a single-Photon Source, operating at night in open air. The single-Photon Source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring the longer distance performance of our system. For strong attenuation, the use of pure single-Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

François Treussart - One of the best experts on this subject based on the ideXlab platform.

  • room temperature triggered single Photon Source in the near infrared
    New Journal of Physics, 2007
    Co-Authors: E. Wu, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, Gérard Roger, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state triggered single-Photon Source with narrow emission in the near infrared at room temperature. It is based on the photoluminescence of a single nickel–nitrogen NE8 colour centre in a chemical vapour deposited diamond nanocrystal. Stable single-Photon emission has been observed in the photoluminescence under both continuous-wave and pulsed excitations. The realization of this Source represents a step forward in the application of diamond-based single-Photon Sources to quantum key distribution (QKD) under practical operating conditions.

  • triggered single Photon Source based on photoluminescence of single nickel related colour centres in cvd grown nanodiamonds
    Annales De Physique, 2007
    Co-Authors: E. Wu, Vairon Jacques, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state single-Photon Source in the near infrared regime at room temperature. It is based on the photoluminescence of a single nickel-related colour centre in a CVD grown diamond nanocrystal. Antibunching has been observed in the fluorescence light, with which we demonstrate a triggered single-Photon Source at room temperature.

  • Experimental open air quantum key distribution with a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Rosa Tualle-brouri, Philippe Grangier
    Abstract:

    We present a full implementation of a quantum key distribution (QKD) system with a single Photon Source, operating at night in open air. The single Photon Source at the heart of the functional and reliable setup relies on the pulsed excitation of a single nitrogen-vacancy color center in diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring longer distance performance of our system. For strong attenuation, the use of pure single Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • Photon statistics characterization of a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, François Treussart, Jm Courty, Jf Roch
    Abstract:

    In a recent experiment, we reported the time-domain intensity noise measurement of a single-Photon Source relying on single-molecule fluorescence control. In this paper, we present data processing starting from photocount timestamps. The theoretical analytical expression of the time-dependent Mandel parameter Q(T) of an intermittent single-Photon Source is derived from ON?OFF dynamics. Finally, Source intensity noise analysis, using the Mandel parameter, is quantitatively compared with the usual approach relying on the time autocorrelation function, both methods yielding the same molecular dynamical parameters.

  • Experimental open-air quantum key distribution with a single-Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, R. Brouri-tualle, R Brouritualle, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Philippe Grangier
    Abstract:

    We describe the implementation of a quantum key distribution (QKD) system using a single-Photon Source, operating at night in open air. The single-Photon Source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring the longer distance performance of our system. For strong attenuation, the use of pure single-Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

Romain Alleaume - One of the best experts on this subject based on the ideXlab platform.

  • Experimental open air quantum key distribution with a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Rosa Tualle-brouri, Philippe Grangier
    Abstract:

    We present a full implementation of a quantum key distribution (QKD) system with a single Photon Source, operating at night in open air. The single Photon Source at the heart of the functional and reliable setup relies on the pulsed excitation of a single nitrogen-vacancy color center in diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring longer distance performance of our system. For strong attenuation, the use of pure single Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • Photon statistics characterization of a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, François Treussart, Jm Courty, Jf Roch
    Abstract:

    In a recent experiment, we reported the time-domain intensity noise measurement of a single-Photon Source relying on single-molecule fluorescence control. In this paper, we present data processing starting from photocount timestamps. The theoretical analytical expression of the time-dependent Mandel parameter Q(T) of an intermittent single-Photon Source is derived from ON?OFF dynamics. Finally, Source intensity noise analysis, using the Mandel parameter, is quantitatively compared with the usual approach relying on the time autocorrelation function, both methods yielding the same molecular dynamical parameters.

  • Experimental open-air quantum key distribution with a single-Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, R. Brouri-tualle, R Brouritualle, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Philippe Grangier
    Abstract:

    We describe the implementation of a quantum key distribution (QKD) system using a single-Photon Source, operating at night in open air. The single-Photon Source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring the longer distance performance of our system. For strong attenuation, the use of pure single-Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • direct measurement of the Photon statistics of a triggered single Photon Source
    Physical Review Letters, 2002
    Co-Authors: François Treussart, Romain Alleaume, Jm Courty, Le V Floch, Liantuan Xiao, Jf Roch
    Abstract:

    : We studied intensity fluctuations of a single Photon Source relying on the pulsed excitation of the fluorescence of a single molecule at room temperature. We directly measured the Mandel parameter Q(T) over 4 orders of magnitude of observation time scale T by recording every photocount. On time scale of a few excitation periods, sub-Poissonian statistics is clearly observed and the probablility of two-Photons events is 10 times smaller than Poissonian pulses. On longer times, blinking in the fluorescence, due to the molecular triplet state, produces an excess of noise.

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

  • room temperature triggered single Photon Source in the near infrared
    New Journal of Physics, 2007
    Co-Authors: E. Wu, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, Gérard Roger, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state triggered single-Photon Source with narrow emission in the near infrared at room temperature. It is based on the photoluminescence of a single nickel–nitrogen NE8 colour centre in a chemical vapour deposited diamond nanocrystal. Stable single-Photon emission has been observed in the photoluminescence under both continuous-wave and pulsed excitations. The realization of this Source represents a step forward in the application of diamond-based single-Photon Sources to quantum key distribution (QKD) under practical operating conditions.

  • triggered single Photon Source based on photoluminescence of single nickel related colour centres in cvd grown nanodiamonds
    Annales De Physique, 2007
    Co-Authors: E. Wu, Vairon Jacques, François Treussart, Philippe Grangier, Steven Prawer, Heping Zeng, James R. Rabeau, Jean-françois Roch
    Abstract:

    We report the realization of a solid-state single-Photon Source in the near infrared regime at room temperature. It is based on the photoluminescence of a single nickel-related colour centre in a CVD grown diamond nanocrystal. Antibunching has been observed in the fluorescence light, with which we demonstrate a triggered single-Photon Source at room temperature.

  • Experimental open air quantum key distribution with a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Rosa Tualle-brouri, Philippe Grangier
    Abstract:

    We present a full implementation of a quantum key distribution (QKD) system with a single Photon Source, operating at night in open air. The single Photon Source at the heart of the functional and reliable setup relies on the pulsed excitation of a single nitrogen-vacancy color center in diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring longer distance performance of our system. For strong attenuation, the use of pure single Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • Experimental open-air quantum key distribution with a single-Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, R. Brouri-tualle, R Brouritualle, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Philippe Grangier
    Abstract:

    We describe the implementation of a quantum key distribution (QKD) system using a single-Photon Source, operating at night in open air. The single-Photon Source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring the longer distance performance of our system. For strong attenuation, the use of pure single-Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

Alexios Beveratos - One of the best experts on this subject based on the ideXlab platform.

  • high quality asynchronous heralded single Photon Source at telecom wavelength
    New Journal of Physics, 2004
    Co-Authors: Sylvain Fasel, Alexios Beveratos, Olivier Alibart, Sebastien Tanzilli, Pascal Baldi, Nicolas Gisin, Hugo Zbinden
    Abstract:

    We report on the experimental realization and characterization of an asynchronous heralded single-Photon Source based on spontaneous parametric down-conversion. Photons at 1550 nm are heralded as being inside a single-mode fibre with more than 60% probability, and the multi-Photon emission probability is reduced by a factor of up to more than 500 compared to Poissonian light Sources. These figures of merit, together with the choice of telecom wavelength for the heralded Photons, are compatible with practical applications needing very efficient and robust single-Photon Sources.

  • Experimental open air quantum key distribution with a single Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Rosa Tualle-brouri, Philippe Grangier
    Abstract:

    We present a full implementation of a quantum key distribution (QKD) system with a single Photon Source, operating at night in open air. The single Photon Source at the heart of the functional and reliable setup relies on the pulsed excitation of a single nitrogen-vacancy color center in diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring longer distance performance of our system. For strong attenuation, the use of pure single Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.

  • Experimental open-air quantum key distribution with a single-Photon Source
    New Journal of Physics, 2004
    Co-Authors: Romain Alleaume, R. Brouri-tualle, R Brouritualle, Gaetan Messin, Jean-françois Roch, François Treussart, Alexios Beveratos, Jean-philippe Poizat, Yannick Dumeige, Philippe Grangier
    Abstract:

    We describe the implementation of a quantum key distribution (QKD) system using a single-Photon Source, operating at night in open air. The single-Photon Source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested the effect of attenuation on the polarized encoded Photons for inferring the longer distance performance of our system. For strong attenuation, the use of pure single-Photon states gives measurable advantage over systems relying on weak attenuated laser pulses. The results are in good agreement with theoretical models developed to assess QKD security.