Experimental demonstration of continuous variable purification of squeezed States

We report on the first experimental demonstration of purification of nonclassical continuous variable states. The protocol uses two copies of phase-diffused states overlapped on a beam splitter and provides Gaussified, less mixed states with the degree of squeezing improved. The protocol uses only l...

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Bibliographic Details
Published in:Physical review letters Vol. 97; no. 15; p. 150505
Main Authors: Franzen, Alexander, Hage, Boris, Diguglielmo, James, Fiurásek, Jaromír, Schnabel, Roman
Format: Journal Article
Language:English
Published: United States 13-10-2006
Online Access:Get full text
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Summary:We report on the first experimental demonstration of purification of nonclassical continuous variable states. The protocol uses two copies of phase-diffused states overlapped on a beam splitter and provides Gaussified, less mixed states with the degree of squeezing improved. The protocol uses only linear optical devices such as beam splitters and homodyne detection, thereby proving these optical elements can be used for successful purification of this type of state decoherence which occurs in optical transmission channels.
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ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.97.150505