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Photonic Quantum Computing

Bright source of spectrally uncorrelated polarization-entangled photons with nearly single-mode emission

arXiv
Authors: P. G. Evans, J. Schaake, R. S. Bennink, W. P. Grice, T. S. Humble

Year

2010

Paper ID

11360

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

Abstract

We present results of a bright polarization-entangled photon source operating at 1552 nm via type-II collinear degenerate spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal. We report a conservative inferred pair generation rate of 123,000 pairs/s/mW into collection modes. Minimization of spectral and spatial entanglement was achieved by group velocity matching the pump, signal and idler modes and through properly focusing the pump beam. By utilizing a pair of calcite beam displacers, we are able to overlap photons from adjacent down-conversion processes to obtain polarization-entanglement visibility of 94.7 +/- 1.1% with accidentals subtracted.

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  • We present results of a bright polarization-entangled photon source operating at 1552 nm via type-II collinear degenerate spontaneous parametric down-conversion in a...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.1609 [2] arXiv https://arxiv.org/abs/1009.1609 [3] Publisher https://arxiv.org/abs/1009.1609

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