Higher fidelity source of entangled photon-pairs from a photonic crystal fiber via mode expansion and Bragg filtering

Alexander Ling; Jun Chen; Jingyun Fan; Alan Migdall

doi:10.1117/12.824362

26 August 2009 Higher fidelity source of entangled photon-pairs from a photonic crystal fiber via mode expansion and Bragg filtering

Alexander Ling, Jun Chen, Jingyun Fan, Alan Migdall

Author Affiliations +

Proceedings Volume 7465, Quantum Communications and Quantum Imaging VII; 74650E (2009) https://doi.org/10.1117/12.824362
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

We report the development of a fiber-based single-spatial-mode source of photon-pairs where the efficiency of extracting photon pairs is 14× higher than a previous implementation [16]. This critical improvement in efficiency enabled a spectrally bright and pure photon-pair source having a small second-order correlation function (0.03) and a raw spectral brightness of 44,700 pairs/(s nm mW). The source can be configured to generate entangled photon-pairs, characterized via optimal and minimal quantum state tomography, to have a fidelity of 97% and tangle of 92%, without correcting for accidentals.

Citation Download Citation

Alexander Ling, Jun Chen, Jingyun Fan, and Alan Migdall "Higher fidelity source of entangled photon-pairs from a photonic crystal fiber via mode expansion and Bragg filtering", Proc. SPIE 7465, Quantum Communications and Quantum Imaging VII, 74650E (26 August 2009); https://doi.org/10.1117/12.824362

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