Experimental open-air quantum key distribution with a single-photon source
By R. Alléaume, F. Treussart, G. Messin, Y. Dumeige, J. Roch, A. Beveratos, R. Brouri-Tualle, J. Poizat, Philippe Grangier. 2004
141 citations recorded by the source corpus.
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.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/d01e5b0b333f42d47ef5a3a596e13d525b2a19aa
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Artificial Intelligence
- Momtchil Peev
- Nicolas J. Cerf
- Miloslav Dusek
- H. Bechmann-Pasquinucci
- Valerio Scarani
- Norbert Lutkenhaus
- J. Wrachtrup
- Fedor Jelezko
In Atomic and Molecular Physics, and Optics
- Fedor Jelezko
- J. Wrachtrup
- N. Manson
- Momtchil Peev
- Nicolas J. Cerf
- Miloslav Dusek
- H. Bechmann-Pasquinucci
- V. Jacques
Citations in the corpus
- Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance (2008, background): “Firstly, its perfect photostability at room temperature enables a practical NV-based single photon source [2, 3] to be realized for quantum cryptography applications [4, 5].”
- Single defect centres in diamond: A review (2006, background): “Indeed quantum key distribution has been successful with fluorescence emission from single defect centres [ 53 ].”
- The security of practical quantum key distribution (2008, background): “QKD experiments have been performed with such sources (Alléaume et al., 2004; Beveratos et al., 2002; Waks et al., 2002), also in fibers (Intallura et al., 2007) thanks to the development of sources at telecom wavelengths (Saint-Girons et al., 2006; Ward et al., 2005; Zinoni et al., 2006).”
- Diamond-based single-photon emitters (2011, methodology): “Single NV− centers in diamond nanocrystals have been used to realize secure exchange over distances of 30–50 m in free space [138, 139], using the experimental setup depicted in figure 14(a).”