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Title: Self-referenced continuous-variable quantum key distribution

Various technologies for continuous-variable quantum key distribution without transmitting a transmitter's local oscillator are described herein. A receiver on an optical transmission channel uses an oscillator signal generated by a light source at the receiver's location to perform interferometric detection on received signals. An optical reference pulse is sent by the transmitter on the transmission channel and the receiver computes a phase offset of the transmission based on quadrature measurements of the reference pulse. The receiver can then compensate for the phase offset between the transmitter's reference and the receiver's reference when measuring quadratures of received data pulses.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1340527
Assignee:
Sandia Corporation (Albuquerque, NM) SNL-A
Patent Number(s):
9,553,677
Application Number:
14/943,373
Contract Number:
AC04-94AL85000
Resource Relation:
Patent File Date: 2015 Nov 17
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICS AND COMPUTING

Other works cited in this record:

Method and apparatus for pulse generation and adaptive pulse generation for optical communications
patent, March 2009

Phase locking in a multi-channel quantum communication system
patent, April 2010

Multi-user quantum cryptography method and system using wavelength division multiplexing
patent, June 2010

Continuous variable quantum encryption key distribution system
patent, April 2011

Methods and apparatus for use in quantum key distribution
patent, March 2014

Multiplexed quantum key distribution
patent, July 2014

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