Scientific article

Heralded Distribution of Single-Photon Path Entanglement

Published inPhysical Review Letters, vol. 125, no. 11, 110506
Publication date2020

We report the experimental realization of heralded distribution of single-photon path entanglement at telecommunication wavelengths in a repeater-like architecture. The entanglement is established upon detection of a single photon, originating from one of two spontaneous parametric down-conversion photon pair sources, after erasing the photon's which-path information. In order to certify the entanglement, we use an entanglement witness which does not rely on postselection. We herald entanglement between two locations, separated by a total distance of 2 km of optical fiber, at a rate of 1.6 kHz. This work paves the way towards high-rate and practical quantum repeater architectures.

Citation (ISO format)
CASPAR, Patrik et al. Heralded Distribution of Single-Photon Path Entanglement. In: Physical Review Letters, 2020, vol. 125, n° 11, p. 110506. doi: 10.1103/PhysRevLett.125.110506
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Article (Published version)
ISSN of the journal0031-9007

Technical informations

Creation09/10/2020 9:23:00 PM
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