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arXiv · 2011.08150

Entanglement swapping between independent and asynchronous integrated photon-pair sources

Farid Samara·Nicolas Maring·Anthony Martin·Arslan S. Raja·Tobias J. Kippenberg·Hugo Zbinden·Rob Thew
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Abstract

Integrated photonics represents a technology that could greatly improve quantum communication networks in terms of cost, size, scaling, and robustness. A key benchmark for this is to demonstrate their performance in complex quantum networking protocols, such as entanglement swapping between independent photon-pair sources. Here, using time-resolved detection, and two independent and integrated Si$_3$N$_4$ microring resonator photon-pair sources, operating in the CW regime at telecom wavelengths, we obtained spectral purities up to $0.97 \pm 0.02$ and a HOM interference visibility between the two sources of $V_{\rm HOM}=93.2 \pm 1.6\,\%$. This results in entanglement swapping visibility as high as $91.2 \pm 3.4\,\%$

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Farid Samara, Nicolas Maring, Anthony Martin, Arslan S. Raja, Tobias J. Kippenberg, Hugo Zbinden, Rob Thew. 2020-11-16. Entanglement swapping between independent and asynchronous integrated photon-pair sources. https://arxiv.org/abs/2011.08150

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