Strongly-Driven One-Atom Laser and Decoherence Monitoring

Details Strongly-Driven One-Atom Laser and Decoherence Monitoring Strongly-Driven One-Atom Laser and Decoherence Monitoring

2007-02-06

arxiv.org/abs/quant-ph/0702054v3

Phys. Rev. A 76, 033802 (2007)

Physics

Quantum Physics

9 pages, 7 figures Accepted in Phys. Rev. A

Scientific paper

We propose the implementation of a strongly-driven one-atom laser, based on the off-resonant interaction of a three-level atom in $\Lambda$-configuration with a single cavity mode and three laser fields. We show that the system can be described equivalently by a two-level atom resonantly coupled to the cavity and driven by a strong effective coherent field. The effective dynamics can be solved exactly, including a thermal field bath, allowing an analytical description of field statistics and entanglement properties. We also show the possible generation of Schr\"odinger cat states for the whole atom-field system and for the field alone after atomic measurement. We propose a way to monitor the system decoherence by measuring atomic population. Finally, we confirm the validity of our model through numerical solutions.

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