## Abstract

We discuss a scheme to relate the phase diffusion dynamics of the micromaser field to the measured atomic population statistics. This can allow us to measure the linewidth of the micromaser spectrum and to solve a relevant decoherence problem in cavity quantum electrodynamics. The main steps are (i) a suitable preparation of the cavity field state to generate coherences, (ii) the transfer of information on the dynamics of field coherences to probe atoms by the action of an external resonant coherent field and (iii) the derivation of the phase diffusion rate, hence the micromaser linewidth, from the measured population statistics of the probe atoms. The method can be applied even in the presence of trapping states, where peculiar linewidth oscillations are expected for increasing pump rate, due to the quantum nature of the micromaser field.

Original language | English |
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Article number | PII S1464-4266(03)59130-3 |

Pages (from-to) | S459-S466 |

Number of pages | 8 |

Journal | Journal of optics b-Quantum and semiclassical optics |

Volume | 5 |

Issue number | 4 |

Publication status | Published - Aug 2003 |

Event | International Conference on Quantum Electronics (IQEC 2002) - Moscow, Russian Federation Duration: 26 Jun 2002 → 01 Jul 2002 |

## Keywords

- cavity QED
- micromaser
- spectrum
- phase diffusion
- ONE-ATOM MASER
- PHOTON NUMBER STATES
- QUANTUM
- LINEWIDTH
- CAVITY
- FIELD