Population inversion of a driven two-level system in a structureless bath

被引：54

作者：

Stace, TM ^{[1
]}

Doherty, AC

Barrett, SD

机构：

[1] Univ Cambridge, DAMTP, Cambridge CB3 0WA, England

[2] Univ Queensland, Sch Phys Sci, Brisbane, Qld 4072, Australia

[3] Hewlett Packard Labs, Bristol BS34 8QZ, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.95.106801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive a master equation for a driven double quantum dot damped by an unstructured phonon bath, and calculate the spectral density. We find that bath-mediated photon absorption is important at relatively strong driving, and may even dominate the dynamics, inducing population inversion of the double-dot system. This phenomenon is consistent with recent experimental observations.

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页数：4

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