Information flow of quantum states interacting with closed timelike curves

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.062330· OSTI ID:21528859

Ralph, T C; Myers, C R ^[1]

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1. Centre for Quantum Computer Technology, Department of Physics, University of Queensland, Brisbane 4072, Queensland (Australia)

Recently, the quantum information processing power of closed timelike curves has been discussed. Because the most widely accepted model for quantum closed timelike curve interactions contains ambiguities, different authors have been able to reach radically different conclusions as to the power of such interactions. By tracing the information flow through such systems we are able to derive equivalent circuits with unique solutions, thus allowing an objective decision between the alternatives to be made. We conclude that closed timelike curves, if they exist and are well described by these simple models, would be a powerful resource for quantum information processing.

• OSTI ID: 21528859
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA PROCESSING
ELECTRONIC CIRCUITS
EQUIVALENT CIRCUITS
INFORMATION
INTERACTIONS
MATHEMATICAL SOLUTIONS
PROCESSING
QUANTUM INFORMATION
QUANTUM STATES