Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator

Fabian Laudenbach; Bernhard Schrenk; Christoph Pacher; Michael Hentschel; Chi-Hang Fred Fung; Fotini Karinou; Andreas Poppe; Momtchil Peev; Hannes Hübel

doi:10.22331/q-2019-10-07-193

Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator

Quantum Physics 2019-10-09 v4

Authors: Fabian Laudenbach , Bernhard Schrenk , Christoph Pacher , Michael Hentschel , Chi-Hang Fred Fung , Fotini Karinou , Andreas Poppe , Momtchil Peev , Hannes Hübel

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Abstract

We present a pilot-assisted coherent intradyne reception methodology for CV-QKD with true local oscillator. An optically phase-locked reference tone, prepared using carrier-suppressed optical single-sideband modulation, is multiplexed in polarisation and frequency to the 250 Mbaud quantum signal in order to provide optical frequency- and phase matching between quantum signal and local oscillator. Our concept allows for high symbol rates and can be operated at an extremely low excess-noise level, as validated by experimental measurements.

Keywords

quantum key distribution frequency comb spectroscopy

Cite

@article{arxiv.1712.10242,
  title  = {Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator},
  author = {Fabian Laudenbach and Bernhard Schrenk and Christoph Pacher and Michael Hentschel and Chi-Hang Fred Fung and Fotini Karinou and Andreas Poppe and Momtchil Peev and Hannes Hübel},
  journal= {arXiv preprint arXiv:1712.10242},
  year   = {2019}
}

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12 pages, 6 figures, 1 table

Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator

Abstract

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