Bounds on classical information capacities for a class of quantum memory channels

Journal Article · Tue Mar 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.034310· OSTI ID:20650516

Bowen, Garry ^[1]; Devetak, Igor ^[2]; Mancini, Stefano ^[3]

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1. Centre for Quantum Computation, DAMTP, University of Cambridge, Cambridge CB3 0WA (United Kingdom)
2. IBM T.J. Watson Research Center, Yorktown Heights, New York 10598 (United States)
3. Dipartimento di Fisica, Universita di Camerino, I-62032 Camerino (Italy)

The maximum rates for information transmission through noisy quantum channels has primarily been developed for memoryless channels, where the noise on each transmitted state is treated as independent. Many real-world communication channels experience noise which is modeled better by errors that are correlated between separate channel uses. In this Brief Report, upper bounds on the classical information capacities of a class of quantum memory channels are derived. The class of channels consists of indecomposable quantum memory channels, a generalization of classical indecomposable finite-state channels.

• OSTI ID: 20650516
• Journal Information: Physical Review. A, Vol. 71, Issue 3; Other Information: DOI: 10.1103/PhysRevA.71.034310; (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
CAPACITY
CORRELATIONS
DATA TRANSMISSION
ENERGY LEVELS
ERRORS
INFORMATION
INFORMATION THEORY
NOISE
QUANTUM MECHANICS
QUANTUM NUMBERS