Title :
Quantum key distribution system using dual-threshold homodyne detection
Author :
Xu, Qing ; Sabban, Manuel ; Gallion, Philippe ; Mendieta, Francisco
Author_Institution :
Ecole Nat. Suprrieure des Telecommun., TELECOM ParisTech, Paris
Abstract :
In this work we present the principles of a flexible quantum key distribution (QKD) system using quadrature-phase-shift-keying (QPSK) base and symbol encoding and dual-threshold balanced homodyne detection (BHD) scheme. We give its security proofs and we compare its performance experimentally with a photon counting detection scheme.
Keywords :
encoding; optical modulation; phase shift keying; photon counting; quantum cryptography; balanced homodyne detection; photon counting detection; quadrature-phase-shift-keying; quantum key distribution; symbol encoding; unconditional security; Data security; Information security; National security; Optical fiber communication; Optical noise; Optical receivers; Phase detection; Public key cryptography; Quadrature phase shift keying; Quantum computing; BB84 protocol; QPSK modulation; balanced homodyne detection; phase shift keying; photon counting; quantum cryptography; quantum key distribution; unconditional security;
Conference_Titel :
Research, Innovation and Vision for the Future, 2008. RIVF 2008. IEEE International Conference on
Conference_Location :
Ho Chi Minh City
Print_ISBN :
978-1-4244-2379-8
Electronic_ISBN :
978-1-4244-2380-4
DOI :
10.1109/RIVF.2008.4586325
