Quantum cryptography key distribution system and method

Details Quantum cryptography key distribution system and method Quantum cryptography key distribution system and method

2003-02-21

2009-06-30

Moazzami, Nasser G (Department: 2436)

Cryptography

Communication system using cryptography

Fiber optic network

C380S044000, C380S277000, C380S278000, C380S279000, C380S044000, C380S044000, C713S168000

Reexamination Certificate

active

07555127

ABSTRACT:
In a quantum cryptography key distribution system for sharing a secret key between a transmitter and a receiver site, an unbalanced interferometer system in the transmitter site has a Mach-Zehnder interferometer switch with a phase modulator while the receiver site records photon arrival time slots. The system utilizes a whole of arrival photons in the receiver site and dispenses with any phase modulator in the receiver site. This system serves to improve a photon utilization efficiency.

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