Time evolution of the variance of the field amplitude in cavity QED
Abstract
We have developed a new correlation technique that permits us to follow the evolution of both the mean amplitude and the variance of a conditional electromagnetic field. The detection of a photon is correlated with the photocurrent from a homodyne detector. The evolution -- amplitude and phase -- of the field and variance are extracted from the homodyne photocurrent. The mean amplitude and variance could ultimately be used to reconstruct the time evolution of a quantum state of the electromagnetic field. We apply this technique to study the time evolution of the electromagnetic field emitted from a cavity QED system. Our preliminary results show the dynamics of the conditional field's mean and variance as the system regresses to steady state. Work supported by the NSF.
- Publication:
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APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- June 2000
- Bibcode:
- 2000APS..DMP..R980S