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

Details Population inversion of driven two-level systems in a structureless bath Population inversion of driven two-level systems in a structureless bath

2005-07-27

arxiv.org/abs/cond-mat/0507638v2

Phys. Rev. Lett. 95, 106801 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 Pages, Added Reference [30] to Dykman, 1979, available at http://www.pa.msu.edu/people/dykman/pub/Sov.J.LowTemp.Phys_5.pdf

Scientific paper

10.1103/PhysRevLett.95.106801

We derive a master equation for a driven double-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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