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Article
Nature 387, 471-475 (29 May 1997) | doi:10.1038/387471a0; Accepted 15 April 1997
Measurement of the quantum states of squeezed light
G. Breitenbach, S. Schiller & J. Mlynek
- Fakultät für Physik, Universität Konstanz, D-78457 Konstanz, Germany
Abstract
A state of a quantum-mechanical system is completely described by a density matrix or a phase-space distribution such as the Wigner function. The complete family of squeezed states of light (states that have less uncertainty in one observable than does the vacuum state) have been generated using an optical parametric amplifier, and their density matrices and Wigner functions have been reconstructed from measurements of the quantum statistics of their electric fields.
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