Measurement of the phase diffusion dynamics in the micromaser

Details Measurement of the phase diffusion dynamics in the micromaser Measurement of the phase diffusion dynamics in the micromaser

2002-08-05

arxiv.org/abs/quant-ph/0208027v1

Phys. Rev. Lett. 90, 183601 (2003)

Physics

Quantum Physics

4 pages, 3 figures. Submitted for publication

Scientific paper

10.1103/PhysRevLett.90.183601

We propose a realistic scheme for measuring the micromaser linewidth by monitoring the phase diffusion dynamics of the cavity field. Our strategy consists in exciting an initial coherent state with the same photon number distribution as the micromaser steady-state field, singling out a purely diffusive process in the system dynamics. After the injection of a counter-field, measurements of the population statistics of a probe atom allow us to derive the micromaser linewidth. Our proposal aims at solving a classic and relevant decoherence problem in cavity quantum electrodynamics, allowing to establish experimentally the distinctive features appearing in the micromaser spectrum due to the discreteness of the electromagnetic field.

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