Quantum key distribution using superposition of the vacuum and single photon states

Details Quantum key distribution using superposition of the vacuum and single photon states Quantum key distribution using superposition of the vacuum and single photon states

2005-10-27

arxiv.org/abs/quant-ph/0510205v1

Physics

Quantum Physics

Scientific paper

B92-type and BB84-type quantum cryptography schemes using superposed states of the vacuum and single particle states which are robust against PNS attacks are studied. The number of securely transferred classical bits per particle (not per qubit) sent in these schemes is calculated and found to have upper bounds. Possible experimental realizations using the cavity QED or linear optics are suggested.

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