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Photonic Quantum Computing Entanglement Theory Quantum Correlations

Compact source of narrow-band counterpropagating polarization-entangled photon pairs using a single dual-periodically poled crystal

arXiv

Authors: Yan-Xiao Gong, Zhen-Da Xie, Ping Xu, Xiao-Qiang Yu, Peng Xue, Shi-Ning Zhu

Year

2011

Paper ID

31106

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

N/A

Abstract

We propose a scheme for the generation of counterpropagating polarization-entangled photon pairs from a dual-periodically poled crystal. Compared with the usual forward-wave type source, this source, in the backward-wave way, has a much narrower bandwidth. With a 2-cm-long bulk crystal, the bandwidths of the example sources are estimated to be 3.6 GHz, and the spectral brightnesses are more than 100 pairs/(s GHz mW). Two concurrent quasi-phase-matched spontaneous parametric down-conversion processes in a single crystal enable our source to be compact and stable. This scheme does not rely on any state projection and applies to both degenerate and non-degenerate cases, facilitating applications of the entangled photons.

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We propose a scheme for the generation of counterpropagating polarization-entangled photon pairs from a dual-periodically poled crystal.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1112.4551 [2] arXiv https://arxiv.org/abs/1112.4551 [3] Publisher https://arxiv.org/abs/1112.4551

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