Long-distance entanglement swapping with photons from separated sources

By Hugues de Riedmatten, I. Marcikic, J. V. Houwelingen, Wolfgang Tittel, H. Zbinden, Nicolas Gisin. 2004

151 citations recorded by the source corpus.

We report the experimental realization of entanglement swapping over long distances in optical fibers. Two photons separated by more than 2 km of optical fibers are entangled, although they never directly interacted. We use two pairs of time-bin entangled qubits created in spatially separated sources and carried by photons at telecommunication wavelengths. A partial Bell-state measurement is performed with one photon from each pair, which projects the two remaining photons, formerly independent onto an entangled state. A visibility high enough to infer a violation of a Bell inequality is reported, after both photons have each traveled through 1.1 km of optical fiber.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/2cf41370ac480782bac244e09db2f5287022b55c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. C. Simon
2. Nicolas Sangouard
3. Hugues de Riedmatten
4. Nicolas Gisin

In Atomic and Molecular Physics, and Optics

1. Nicolas Sangouard
2. C. Simon
3. Nicolas Gisin
4. Hugues de Riedmatten
5. Wolfgang Tittel

Citations in the corpus

• Quantum repeaters based on atomic ensembles and linear optics (2009, background): “…demonstrations of entanglement swapping have been realized with entangled photons (Halder et al., 2007; Kaltenbaek et al., 2009; Pan e al., 1998; de Riedmatten et al., 2005), only one attempt has been made s far to demonstrate the swapping of entangleme t with ensemble quantum memories (Laurat et…”