Published January 2011 | Version v1
Journal article

Comparing different non-Markovianity measures in a driven qubit system

  • 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)
  • 3. SUPA, Department of Physics, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

Description

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.

Additional details

Publishing Information

Journal Title
Physical Review. A
Journal Volume
83
Journal Issue
1
Journal Page Range
p. 012112-012112.5
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43008871
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
DATA TRANSMISSION; MARKOV PROCESS; MEASURE THEORY; QUANTUM INFORMATION; QUANTUM MECHANICS; QUBITS
Descriptors DEC
COMMUNICATIONS; INFORMATION; MATHEMATICS; MECHANICS; QUANTUM INFORMATION; STOCHASTIC PROCESSES

Optional Information

Notes
(c) 2011 American Institute of Physics