ON THE RELAXATION OF A 2-LEVEL SYSTEM DRIVEN BY A STRONG ELECTROMAGNETIC-FIELD

被引：120

作者：

GEVA, E

KOSLOFF, R

SKINNER, JL

机构：

[1] HEBREW UNIV JERUSALEM, FRITZ HABER RES CTR, IL-91904 JERUSALEM, ISRAEL

[2] UNIV WISCONSIN, INST THEORET CHEM, MADISON, WI 53706 USA

[3] UNIV WISCONSIN, DEPT CHEM, MADISON, WI 53706 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 102卷 / 21期

关键词：

D O I：

10.1063/1.468844

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：8541 / 8561

页数：21

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