Article Dans Une Revue Physical Review Letters Année : 2020

Heralded Distribution of Single-Photon Path Entanglement

P. Caspar
N. Maring
F. Samara
M. Perrenoud
P. Sekatski
A. Martin
H. Zbinden
R. T. Thew

Résumé

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.

Dates et versions

cea-04414381 , version 1 (24-01-2024)

Identifiants

Citer

P. Caspar, E. Verbanis, E. Oudot, N. Maring, F. Samara, et al.. Heralded Distribution of Single-Photon Path Entanglement. Physical Review Letters, 2020, 125 (11), pp.110506. ⟨10.1103/PhysRevLett.125.110506⟩. ⟨cea-04414381⟩
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