Cavity Q.E.D.: Fundamental Theory of the Micromaser and Measurements of its Cavity Field

  • R. K. Bullough
  • N. M. Bogoliubov
  • N. Nayak
  • B. V. Thompson
Part of the NATO ASI Series book series (NSSB, volume 282)


This paper reports a new theoretical investigation, numerically based, of the action of the one-atom one-mode micromaser. In the recent experiments1,2 on the Garching micromaser1–4 there is at most one 85Rb atom in the maser cavity during an atomic transit time tint ~ 35µ sec. But atoms enter with a repetition rate Tp (say) ~ 7000µ sec, so that the cavity is empty of atoms for more than 99%, of the time. The main result of this paper is that if the empty-of-atoms time Tp-tint is reduced towards the values of tint itself, the system acts more like a maser with infinite cavity Q even at the now realised Q and temperature T1,2 Q = 3 × 1010, T = 0.5oK. Thus in distinction to previous discussions, e.g.5, we suggest that it may be possible to create Fock states at this Q and T. However, as Tp is reduced, the theoretical problem becomes complicated by the possibility of more than one atom being in the cavity at the same time.


Trapping State Quantum Group Heat Bath Rydberg Atom Cavity Field 
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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • R. K. Bullough
    • 1
  • N. M. Bogoliubov
    • 1
  • N. Nayak
    • 1
  • B. V. Thompson
    • 1
  1. 1.Department of MathematicsUMISTManchesterUK

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