Observation of squeezed states generated by four-wave mixing in an optical cavity

R. E. Slusher, L. W. Hollberg, B. Yurke, J. C. Mertz, J. F. Valley

Research output: Contribution to journalArticlepeer-review

1629 Scopus citations

Abstract

Squeezed states of the electromagnetic field have been generated by nondegenerate four-wave mixing due to Na atoms in an optical cavity. The optical noise in the cavity, comprised of primarily vacuum fluctuations and a small component of spontaneous emission from the pumped Na atoms, is amplified in one quadrature of the optical field and deamplified in the other quadrature. These quadrature components are measured with a balanced homodyne detector. The total noise level in the deamplified quadrature drops below the vacuum noise level.

Original languageEnglish
Pages (from-to)2409-2412
Number of pages4
JournalPhysical Review Letters
Volume55
Issue number22
DOIs
StatePublished - 1985
Externally publishedYes

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