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Constraints on relaxation rates for N-level quantum systems

Schirmer, S.G. and Solomon, A.I. (2004). Constraints on relaxation rates for N-level quantum systems. Physical Review A, 70(2) 022107.

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DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1103/PhysRevA.70.022107
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Abstract

We study the constraints imposed on the population and phase relaxation rates by the requirement that the evolution of the system be completely positive for open N-level systems. The Lindblad operators that govern the evolution of the system are expressed in terms of observable relaxation rates, explicit expressions for the decoherence rates due to population relaxation are derived, and it is shown that there are additional, non-trivial constraints on the pure dephasing rates for N>2. The implications of the results are discussed for generic ladder-, Lambda- and V-systems and transitions between degenerate energy levels.

Item Type: Journal Article
ISSN: 1094-1622
Academic Unit/Department: Science > Physical Sciences
Item ID: 4750
Depositing User: Users 6042 not found.
Date Deposited: 11 Jul 2006
Last Modified: 26 Dec 2013 19:55
URI: http://oro.open.ac.uk/id/eprint/4750
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