How to measure the phase diffusion dynamics in the micromaser

F Casagrande*, A Ferraro, A Lulli, R Bonifacio, E Solano, H Walther

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We propose a realistic scheme for measuring the micromaser linewidth by monitoring the phase diffusion dynamics of the cavity field. Our strategy consists of 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 counterfield, measurements of the population statistics of a probe atom allow us to derive the micromaser linewidth in all ranges of the relevant parameters, establishing experimentally the distinctive features of the micromaser spectrum due to the discreteness of the electromagnetic field.

Original languageEnglish
Article number183601
Number of pages4
JournalPhysical Review Letters
Volume90
Issue number18
DOIs
Publication statusPublished - 09 May 2003

Keywords

  • ONE-ATOM MASER
  • PHOTON NUMBER STATES
  • SPECTRUM
  • CAVITY
  • FIELD
  • LINEWIDTH

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