Comparing different non-Markovianity measures in a driven qubit system

Journal Article · Sat Jan 15 04:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.012112· OSTI ID:21529034

Haikka, P ^[1]; Cresser, J D ^[2]; Maniscalco, S ^[1]

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1. Turku Center for Quantum Physics, Department of Physics and Astronomy, University of Turku, FIN-20014 Turku (Finland)
2. CQST, Department of Physics and Astronomy, Macquarie University, Sydney, New South Wales 2109 (Australia)

We consider two recently proposed measures of non-Markovianity applied to a particular quantum process describing the dynamics of a driven qubit in a structured reservoir. The motivation for this study is twofold: on one hand, we study the differences and analogies of the non-Markovianity measures, and on the other hand, we investigate the effect of the driving force on the dissipative dynamics of the qubit. In particular we ask if the driving force introduces new channels for energy and/or information transfer between the system and the environment or if it amplifies existing ones. We show under which conditions the presence of the driving force slows down the inevitable loss of quantum properties of the qubit.

• OSTI ID: 21529034
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
COMMUNICATIONS
DATA TRANSMISSION
INFORMATION
MARKOV PROCESS
MATHEMATICS
MEASURE THEORY
MECHANICS
QUANTUM INFORMATION
QUANTUM MECHANICS
QUBITS
STOCHASTIC PROCESSES