Demonstration of the spatial separation of the entangled quantum sidebands of an optical field

Quantum optics experiments on 'bright' beams are based on the spectral analysis of field fluctuations and typically probe correlations between radio-frequency sideband modes. However, the extra degree of freedom represented by this dual-mode picture is generally ignored. We demonstrate the...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005-04, Vol.71 (4), Article 041802
Main Authors: Huntington, E. H., Milford, G. N., Robilliard, C., Ralph, T. C., Glöckl, O., Andersen, U. L., Lorenz, S., Leuchs, G.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
CORRELATIONS
DEGREES OF FREEDOM
ENERGY LEVELS
FLUCTUATIONS
OPERATION
OPTICS
PROBES
QUANTUM MECHANICS
QUANTUM NUMBERS
RADIOWAVE RADIATION
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Summary:Quantum optics experiments on 'bright' beams are based on the spectral analysis of field fluctuations and typically probe correlations between radio-frequency sideband modes. However, the extra degree of freedom represented by this dual-mode picture is generally ignored. We demonstrate the experimental operation of a device which can be used to separate the quantum sidebands of an optical field. We use this device to explicitly demonstrate the quantum entanglement between the sidebands of a squeezed beam.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.71.041802