Quantum control by compensation of quantum fluctuations

Details Quantum control by compensation of quantum fluctuations Quantum control by compensation of quantum fluctuations

1997-08-19

arxiv.org/abs/quant-ph/9708031v2

Optics Express 2, 339 (1998)

Physics

Quantum Physics

5 pages RevTex and 2 figures, to be published in Optics Express

Scientific paper

We show that the influence of quantum fluctuations in the electromagnetic field vacuum on a two level atom can be measured and consequently compensated by balanced homodyne detection and a coherent feedback field. This compensation suppresses the decoherence associated with spontaneous emission for a specific state of the atomic system allowing complete control of the coherent state of the system.

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