Analysis of limiting information characteristics of quantum-cryptography protocols

Journal Article · Mon Jan 31 00:00:00 EST 2005 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2005V035N01ABEH002886· OSTI ID:21470681

Sych, D V; Grishanin, Boris A; Zadkov, Viktor N ^[1]

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1. Department of Physics, M.V. Lomonosov Moscow State University, Moscow (Russian Federation)

The problem of increasing the critical error rate of quantum-cryptography protocols by varying a set of letters in a quantum alphabet for space of a fixed dimensionality is studied. Quantum alphabets forming regular polyhedra on the Bloch sphere and the continual alphabet equally including all the quantum states are considered. It is shown that, in the absence of basis reconciliation, a protocol with the tetrahedral alphabet has the highest critical error rate among the protocols considered, while after the basis reconciliation, a protocol with the continual alphabet possesses the highest critical error rate. (quantum optics and quantum computation)

• OSTI ID: 21470681
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 35, Issue 1; Other Information: DOI: 10.1070/QE2005v035n01ABEH002886; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ERRORS
INFORMATION
QUANTUM CRYPTOGRAPHY
QUANTUM STATES
SPHERES
CRYPTOGRAPHY