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.
- Received 23 July 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.083603
© 2013 American Physical Society
Synopsis
One is Better than Two, at Least When it Comes to Photons
Published 21 February 2013
Entanglement of two atoms is achieved by the detection of a single photon.
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