Continuous-variable quantum-key-distribution protocols with a non-Gaussian modulation

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.042312· OSTI ID:21544579

Leverrier, Anthony; Grangier, Philippe ^[1]

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1. ICFO-Institut de Ciences Fotoniques, F-08860 Castelldefels (Barcelona) (Spain)

In this paper, we consider continuous-variable quantum-key-distribution (QKD) protocols which use non-Gaussian modulations. These specific modulation schemes are compatible with very efficient error-correction procedures, hence allowing the protocols to outperform previous protocols in terms of achievable range. In their simplest implementation, these protocols are secure for any linear quantum channels (hence against Gaussian attacks). We also show how the use of decoy states makes the protocols secure against arbitrary collective attacks, which implies their unconditional security in the asymptotic limit.

• OSTI ID: 21544579
• Journal Information: Physical Review. A, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevA.83.042312; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ASYMPTOTIC SOLUTIONS
CORRECTIONS
DISTRIBUTION
MODULATION
QUANTUM CRYPTOGRAPHY
QUANTUM INFORMATION
CRYPTOGRAPHY
INFORMATION
MATHEMATICAL SOLUTIONS