Demonstration of a Stable Atom-Photon Entanglement Source for Quantum Repeaters
- 2 November 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 99 (18), 180505
- https://doi.org/10.1103/physrevlett.99.180505
Abstract
We demonstrate a novel way to efficiently create a robust entanglement between an atomic and a photonic qubit. A single laser beam is used to excite one atomic ensemble and two different modes of Raman fields are collected to generate the atom-photon entanglement. With the help of built-in quantum memory, the entanglement still exists after storage time which is further proved by the violation of Clauser-Horne-Shimony-Holt type Bell’s inequality. The entanglement procedure can serve as a building block for a novel robust quantum repeater architecture [Zhao et al., Phys. Rev. Lett. 98, 240502 (2007)] and can be extended to generate high-dimensional atom-photon entanglements.
Keywords
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