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Path length modulation technique for scatter noise immunity in squeezing measurements

Wade, Andrew; Chua, Sheon S Y; Stefszky, Michael S; Shaddock, Daniel A; McClelland, David E

Description

We present a technique for frequency shifting scattering induced noise on squeezed light beams, providing immunity from scattered light while preserving the squeezed states. Using a 500 Hz pre and postsqueezing apparatus path length modulation, we show up to a 20 dB reduction in scattering induced noise while recovering squeezing measurement below the shot noise level. Such a technique offers immunity to spurious scattering sources without the need for optically lossy isolation optics.

CollectionsANU Research Publications
Date published: 2013-07-01
Type: Journal article
URI: http://hdl.handle.net/1885/101200
Source: Optics letters
DOI: 10.1364/OL.38.002265

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