Sub-shot-noise heterodyne polarimetry
Optics Letters, Vol. 29, Issue 23, pp. 2800-2802 (2004)
http://dx.doi.org/10.1364/OL.29.002800
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Abstract
We report an experimental demonstration of a heterodyne polarization rotation measurement with a noise floor 4.8 dB below the optical shot noise by use of classically phase-locked quantum twin beams emitted above threshold by an ultrastable type II Na:KTP cw optical parametric oscillator. We believe that this is the largest noise reduction achieved to date in optical phase-difference measurements.
© 2004 Optical Society of America
OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(270.1670) Quantum optics : Coherent optical effects
(270.5570) Quantum optics : Quantum detectors
(270.6570) Quantum optics : Squeezed states
Citation
Sheng Feng and Olivier Pfister, "Sub-shot-noise heterodyne polarimetry," Opt. Lett. 29, 2800-2802 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-23-2800
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