Heralded Distribution of Single-Photon Path Entanglement.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
11 Sep 2020
Historique:
received: 24 04 2020
accepted: 30 07 2020
entrez: 25 9 2020
pubmed: 26 9 2020
medline: 26 9 2020
Statut: ppublish

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.

Identifiants

DOI: 10.1103/PhysRevLett.125.110506 PMID: 32975988
pubmed: 32975988
doi: 10.1103/PhysRevLett.125.110506
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

110506

Auteurs

P Caspar (P)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

E Verbanis (E)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

E Oudot (E)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.
Quantum Optics Theory Group, University of Basel, CH-4056 Basel, Switzerland.

N Maring (N)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

F Samara (F)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

M Caloz (M)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

M Perrenoud (M)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

P Sekatski (P)

Quantum Optics Theory Group, University of Basel, CH-4056 Basel, Switzerland.

A Martin (A)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

N Sangouard (N)

Quantum Optics Theory Group, University of Basel, CH-4056 Basel, Switzerland.
Institut de physique théorique, Université Paris Saclay, CEA, CNRS, F-91191 Gif-sur-Yvette, France.

H Zbinden (H)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

R T Thew (RT)

Department of Applied Physics, University of Geneva, CH-1211 Genève, Switzerland.

Classifications MeSH