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Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables (2004)
| Citations: | 4 - 0 self |
BibTeX
@MISC{Jia04experimentaldemonstration,
author = {Xiaojun Jia and Xiaolong Su and Qing Pan and Jiangrui Gao and Changde Xie and Kunchi Peng},
title = {Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables},
year = {2004}
}
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Abstract
The unconditional entanglement swapping for continuous variables is experimentally demonstrated. Two initial entangled states are produced from two nondegenerate optical parametric amplifiers operating at deamplification. Through implementing the direct measurement of Bell-state between two optical beams from each amplifier the remaining two optical beams, which have never directly interacted with each other, are entangled. The quantum correlation degrees of 1.23dB and 1.12dB below the shot noise limit for the amplitude and phase quadratures resulting from the entanglement swapping are straightly measured. PACS numbers: 03.67.Hk, 42.50.Dv 1 It has been recognized that quantum entanglement is an important resource in quantum information and computation. Due to utilizing entanglement shared by sender and receiver together with local operations and classical communication, various feats of quantum communication, such as
Keyphrases
continuous variable unconditional entanglement swapping experimental demonstration optical beam local operation classical communication quantum entanglement shot noise limit quantum information various feat phase quadrature pac number nondegenerate optical parametric amplifier important resource quantum communication direct measurement quantum correlation degree unconditional entanglement
