2013
DOI: 10.1038/nphoton.2013.101
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Quantum tele-amplification with a continuous-variable superposition state

Abstract: Optical coherent states are classical light fields with high purity, and are essential carriers of information in optical networks. If these states could be controlled in the quantum regime, allowing for their quantum superposition (referred to as a Schrödinger cat state), then novel quantumenhanced functions such as coherent-state quantum computing (CSQC) 1-5 , quantum metrology 6,7 , and a quantum repeater 8,9 , could be realized in the networks. Optical cat states are now routinely generated in the laborato… Show more

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Cited by 59 publications
(62 citation statements)
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“…5 to have the smaller amplitude). Such a strategy was also applied to the tele-amplification protocol [48] and the distributed generation scheme for ECSs [49]. .…”
Section: Bell-chsh Inequality Tests Under Decoherence Effectsmentioning
confidence: 99%
See 1 more Smart Citation
“…5 to have the smaller amplitude). Such a strategy was also applied to the tele-amplification protocol [48] and the distributed generation scheme for ECSs [49]. .…”
Section: Bell-chsh Inequality Tests Under Decoherence Effectsmentioning
confidence: 99%
“…An ECS in a free-traveling field was experimentally generated using the photon subtraction technique on two approximate superpositions of coherent states (SCSs) [47]. A proof-of-principle demonstration of quantum teleportation using an ECS as a quantum channel was performed [48].…”
Section: Introductionmentioning
confidence: 99%
“…The amplitude of cat states can be enlarged with conditional methods [4,11]. Cat states are resources for teleamplification of coherent states [12]. Hybridization of coherent-state qubits and number-state qubits is also demonstrated [13,14].…”
Section: Introductionmentioning
confidence: 99%
“…Recently, continuous-variable (CV) superposed/entangled states have shown their potential in various optical and photonic experiments [6] and the use of CV entangled states can be robust in practical quantum metrology [7,8,9].…”
Section: Introductionmentioning
confidence: 99%