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20 April 2024

» arxiv » quant-ph/0311056

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Experimental demonstration of quantum teleportation of a squeezed state
Nobuyuki Takei ; Takao Aoki ; Satoshi Koike ; Kenichiro Yoshino ; Kentaro Wakui ; Hidehiro Yonezawa ; Takuji Hiraoka ; Jun Mizuno ; Masahiro Takeoka ; Masashi Ban ; Akira Furusawa ;
Date:	10 Nov 2003
Subject:	quant-ph
Abstract:	Quantum teleportation of a squeezed state is demonstrated experimentally. Due to some inevitable losses in experiments, a squeezed vacuum necessarily becomes a mixed state which is no longer a minimum uncertainty state. We establish an operational method of evaluation for quantum teleportation of such a state using fidelity, and discuss the classical limit for the state. The measured fidelity for the input state is 0.85$pm$ 0.05 which is higher than the classical case of 0.73$pm$0.04. We also verify that the teleportation process operates properly for the nonclassical state input and its squeezed variance is certainly transferred through the process. We observe the smaller variance of the teleported squeezed state than that for the vacuum state input.
Source:	arXiv, quant-ph/0311056
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