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Secure Communication via a Recycling of Attenuated Classical Signals

Journal Article · · Physical Review Applied

We describe a simple method of interleaving a classical and quantum signal in a secure communication system at a single wavelength. The system transmits data encrypted via a one-time pad on a classical signal and produces a single-photon reflection of the encrypted signal. This attenuated signal can be used to observe eavesdroppers and produce fresh secret bits. The system can be secured against eavesdroppers, detect simple tampering or classical bit errors, produces more secret bits than it consumes, and does not require any entanglement or complex wavelength division multiplexing, thus, making continuous secure two-way communication via one-time pads practical.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1340441
Alternate ID(s):
OSTI ID: 1339179
Journal Information:
Physical Review Applied, Journal Name: Physical Review Applied Journal Issue: 1 Vol. 7; ISSN 2331-7019
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (11)

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Gigahertz-gated InGaAs/InP single-photon detector with detection efficiency exceeding 55% at 1550 nm journal February 2015
Quantum key distribution and 1 Gbps data encryption over a single fibre journal June 2010
Secure direct communication with a quantum one-time pad journal May 2004
Bidirectional quantum key distribution protocol with practical faint laser pulses journal July 2004
Security of two quantum cryptography protocols using the same four qubit states journal September 2005
Quantum key distribution with an unknown and untrusted source journal May 2008
Unconditional security proof of a deterministic quantum key distribution with a two-way quantum channel journal October 2011
Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer journal October 1997
Strengths and Weaknesses of Quantum Computing journal October 1997

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS