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arXiv:1207.5468 · Physical Review Letters

Atom-Atom Entanglement by Single-Photon Detection

L. Slodička, Gabriel Hetet, N. Röck, Philipp Schindler, Markus Hennrich, R. Blatt

Published Feb 21, 2013• 97 citations
arXivHTMLPDF

Abstract

A scheme for entangling distant atoms is realized, as proposed in the seminal paper by [C. Cabrillo et al., Phys. Rev. A 59, 1025 (1999)]. The protocol is based on quantum interference and detection of a single photon scattered from two effectively one meter distant laser cooled and trapped atomic ions. The detection of a single photon heralds entanglement of two internal states of the trapped ions with high rate and with a fidelity limited mostly by atomic motion. Control of the entangled state phase is demonstrated by changing the path length of the single-photon interferometer.

DOI
10.1103/physrevlett.110.083603

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