Continuous variable quantum key distribution using polarization encoding and post selection

S Lorenz, Natalia Korolkova, G Leuchs

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)

Abstract

We present an experimental demonstration of a quantum key distribution protocol using coherent polarization states. Post selection is used to ensure a low error rate and security against beam-splitting attacks even in the presence of high losses. Signal encoding and readout in polarization bases avoids the difficult task of sending a local oscillator with the quantum channel. This makes our setup robust and easy to implement. A shared key was established for losses up to 64%.

Original languageEnglish
Pages (from-to)273-277 (quant-ph/0403064)
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume79
DOIs
Publication statusPublished - Aug 2004

Keywords

  • COHERENT STATES
  • CRYPTOGRAPHY

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