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Influence of pump coherence on the quantum properties of spontaneous parametric down-conversion

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Influence of pump coherence on the quantum properties of spontaneous parametric down-conversion. / Giese, Enno; Fickler, Robert; Zhang, Wuhong; Chen, Lixiang; Boyd, Robert W.

In: Physica Scripta, Vol. 93, No. 8, 084001, 08.2018.

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Giese, Enno ; Fickler, Robert ; Zhang, Wuhong ; Chen, Lixiang ; Boyd, Robert W. / Influence of pump coherence on the quantum properties of spontaneous parametric down-conversion. In: Physica Scripta. 2018 ; Vol. 93, No. 8.

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@article{8498534361434d409405f9df16bad9c3,
title = "Influence of pump coherence on the quantum properties of spontaneous parametric down-conversion",
abstract = "The correlation properties of the pump field in spontaneous parametric down-conversion are crucial in determining the degree of entanglement of generated signal and idler photons. We find theoretically that continuous-variable entanglement of the transverse positions and momenta of these photons can be achieved only if the coherence of the pump beam is sufficiently high. The positions of signal and idler photons are found to be correlated, even for an incoherent pump. However, the momenta of the signal and idler photons are not anti-correlated, even though transverse momentum is conserved.",
keywords = "entaglement, patrametric down-conversion, partially coherent beam, Gaussian Schell-model beam, BELL-INEQUALITY, TIME",
author = "Enno Giese and Robert Fickler and Wuhong Zhang and Lixiang Chen and Boyd, {Robert W.}",
year = "2018",
month = "8",
doi = "10.1088/1402-4896/aace12",
language = "English",
volume = "93",
journal = "Physica Scripta",
issn = "0031-8949",
publisher = "IOP Publishing",
number = "8",

}

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TY - JOUR

T1 - Influence of pump coherence on the quantum properties of spontaneous parametric down-conversion

AU - Giese, Enno

AU - Fickler, Robert

AU - Zhang, Wuhong

AU - Chen, Lixiang

AU - Boyd, Robert W.

PY - 2018/8

Y1 - 2018/8

N2 - The correlation properties of the pump field in spontaneous parametric down-conversion are crucial in determining the degree of entanglement of generated signal and idler photons. We find theoretically that continuous-variable entanglement of the transverse positions and momenta of these photons can be achieved only if the coherence of the pump beam is sufficiently high. The positions of signal and idler photons are found to be correlated, even for an incoherent pump. However, the momenta of the signal and idler photons are not anti-correlated, even though transverse momentum is conserved.

AB - The correlation properties of the pump field in spontaneous parametric down-conversion are crucial in determining the degree of entanglement of generated signal and idler photons. We find theoretically that continuous-variable entanglement of the transverse positions and momenta of these photons can be achieved only if the coherence of the pump beam is sufficiently high. The positions of signal and idler photons are found to be correlated, even for an incoherent pump. However, the momenta of the signal and idler photons are not anti-correlated, even though transverse momentum is conserved.

KW - entaglement

KW - patrametric down-conversion

KW - partially coherent beam

KW - Gaussian Schell-model beam

KW - BELL-INEQUALITY

KW - TIME

U2 - 10.1088/1402-4896/aace12

DO - 10.1088/1402-4896/aace12

M3 - Article

VL - 93

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

IS - 8

M1 - 084001

ER -