Quantum cryptography using photon source based on postselection from entangled two-photon states

Details Quantum cryptography using photon source based on postselection from entangled two-photon states Quantum cryptography using photon source based on postselection from entangled two-photon states

2001-07-17

arxiv.org/abs/quant-ph/0107086v1

Physical Review A 64, 052305 (2001)

Physics

Quantum Physics

18 pages, 15 PS figures

Scientific paper

10.1103/PhysRevA.64.052305

A photon source based on postselection from entangled photon pairs produced by parametric frequency down-conversion is suggested. Its ability to provide good approximations of single-photon states is examined. Application of this source in quantum cryptography for quantum key distribution is discussed. Advantages of the source compared to other currently used sources are clarified. Future prospects of the photon source are outlined.

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