TITLE

On the relaxation of a two-level system driven by a strong electromagnetic field

AUTHOR(S)
Geva, Eitan; Kosloff, Ronnie; Skinner, J. L.
PUB. DATE
June 1995
SOURCE
Journal of Chemical Physics;6/1/1995, Vol. 102 Issue 21, p8541
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A detailed and unified account of the theory of the generalized Bloch equations is presented. The equations apply to a two-level system weakly coupled to a heat bath and subject to a monochromatic rotating field of arbitrary intensity. The relaxation tensor obtained is explicitly field-dependent. The derivation is valid for general coupling to a quantum heat bath. The generalized Bloch equations are shown to be thermodynamically consistent, as opposed to the standard Bloch equations. Different limits of the generalized Bloch equations are examined and related to previous studies. The potential use of the generalized Bloch equations as a probe of the bath spectral density is demonstrated for the case of a two-level system embedded in a Debye solid. © 1995 American Institute of Physics.
ACCESSION #
7617494

 

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