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Long-haul high rate quantum key distribution

Patent ·
OSTI ID:1637888

Multiple bit values can be encoded on a single photon in a quantum key distribution (QKD) system using a plurality of sidebands of an optical carrier frequency. Computational and conjugate bases can be defined, and photons decoded based on a selected state from either basis. If n sidebands are available, as many as log2 n bits can be encoded on a single photon. Errors in detected bit values due to selection of an incorrect basis state or other errors can be at least partially corrected by bit distillation to identity bit strings for which a transmitter and a receiver record the same values, without insecure transmission of these values.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
Assignee:
Triad National Security, LLC (Los Alamos, NM)
Patent Number(s):
10,587,402
Application Number:
16/023,472
OSTI ID:
1637888
Country of Publication:
United States
Language:
English

References (2)

Optimum design for BB84 quantum key distribution in tree-type passive optical networks journal January 2010
Observation of Kuznetsov-Ma soliton dynamics in optical fibre journal June 2012

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