Quantum cryptography using a photon source based on postselection from entangled two-photon states - art. no. 052305

Authors
Perina, J Haderka, O Soubusta, J
Citation
J. Perina et al., Quantum cryptography using a photon source based on postselection from entangled two-photon states - art. no. 052305, PHYS REV A, 6405(5), 2001, pp. 2305
Citations number
32
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6405
Issue
5
Year of publication
2001
Database
ISI
SICI code
1050-2947(200111)6405:5<2305:QCUAPS>2.0.ZU;2-K
Abstract
A photon source based on postelection from entangled photon pairs produced by parametric frequency down-conversion is suggested. Its ability to provid e good approximations of single-photon states is examined. Application of t his source in quantum cryptography for quantum key distribution is discusse d. Advantages of the source compared to other currently used sources are cl arified. Future prospects of the photon source are outlined.