Bloch-Siegert shift for multiphoton resonances

Details Bloch-Siegert shift for multiphoton resonances Bloch-Siegert shift for multiphoton resonances

2007-09-12

arxiv.org/abs/0709.1958v1

Physics

Quantum Physics

6 pages, 1 figure

Scientific paper

Recently there has been theoretical and experimental interest in Bloch-Siegert shifts in an intense photon field. A perturbative treatment becomes difficult in this multiphoton regime. We present a unitary transform and rotated model, which allows us to get accurate results away from the level anticrossings. A simple variational energy estimate leads to a new expression for the dressed two-level system energy which is accurate, and useful over a wide range of the dimensionless coupling constant.

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