Security of continuous-variable quantum cryptography using coherent states: Decline of postselection advantage
Journal Article
·
· Physical Review. A
- CREST Research Team for Photonic Quantum Information, Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 (Japan)
We investigate the security of continuous-variable (CV) quantum key distribution (QKD) using coherent states in the presence of quadrature excess noise. We consider an eavesdropping attack that uses a linear amplifier and a beam splitter. This attack makes a link between the beam-splitting attack and the intercept-resend attack (classical teleportation attack). We also show how postselection loses its efficiency in a realistic channel.
- OSTI ID:
- 20718231
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Security of quantum cryptography using balanced homodyne detection
Efficient-phase-encoding protocols for continuous-variable quantum key distribution using coherent states and postselection
Intermediate states in quantum cryptography and Bell inequalities
Journal Article
·
Fri Jan 31 23:00:00 EST 2003
· Physical Review. A
·
OSTI ID:20633688
Efficient-phase-encoding protocols for continuous-variable quantum key distribution using coherent states and postselection
Journal Article
·
Fri Sep 15 00:00:00 EDT 2006
· Physical Review. A
·
OSTI ID:20857655
Intermediate states in quantum cryptography and Bell inequalities
Journal Article
·
Sun Jun 01 00:00:00 EDT 2003
· Physical Review. A
·
OSTI ID:20636537