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Photonic Quantum Computing Entanglement Theory Quantum Correlations

Post-selection free, integrated optical source of non-degenerate, polarization entangled photon pairs

arXiv
Authors: Harald Herrmann, Xu Yang, Abu Thomas, Andreas Poppe, Wolfgang Sohler, Christine Silberhorn

Year

2013

Paper ID

33449

Status

Preprint

Abstract Read

~2 min

Abstract Words

110

Citations

N/A

Abstract

We present an integrated source of polarization entangled photon pairs in the telecom regime, which is based on type II-phasematched parametric down-conversion (PDC) in a Ti-indiffused waveguide in periodically poled lithium niobate. The domain grating - consisting of an interlaced bi-periodic structure - is engineered to provide simultaneous phase-matching of two PDC processes, and enables the direct generation of non-degenerate, polarization entangled photon pairs with a brightness of B=7times103 pairs/(s mW GHz). The spatial separation of the photon pairs is accomplished by a fiber-optical multiplexer facilitating a high compactness of the overall source. Visibilities exceeding 95% and a violation of the Bell inequality with S=2.57pm0.06 could be demonstrated.

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  • We present an integrated source of polarization entangled photon pairs in the telecom regime, which is based on type II-phasematched parametric down-conversion (PDC) in a...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1307.7939 [2] arXiv https://arxiv.org/abs/1307.7939 [3] Publisher https://arxiv.org/abs/1307.7939

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