Quantum key distribution with vacuum-one-photon entangled states

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.064303· OSTI ID:20717989

Giorgi, Gian Luca ^[1]

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1. INFM Center for Statistical Mechanics and Complexity and Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Rome (Italy)

We present a scheme to realize a quantum key distribution using vacuum-one-photon entangled states created both from Alice and Bob. The protocol consists of an exchange of spatial modes between Alice and Bob and in a recombination which allows one of them to reconstruct the bit encoded by the counterpart in the phase of the entangled state. The security of the scheme is analyzed against some simple kind of attack. The model is shown to reach higher efficiency with respect to prior schemes using phase encoding methods.

• OSTI ID: 20717989
• Journal Information: Physical Review. A, Vol. 71, Issue 6; Other Information: DOI: 10.1103/PhysRevA.71.064303; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DISTRIBUTION
EFFICIENCY
ENERGY LEVELS
PHOTONS
QUANTUM CRYPTOGRAPHY
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
RECOMBINATION
SECRECY PROTECTION