Phys. Rev. Lett. 103, 020505 (2009) [4 pages]Entanglement of a Photon and an Optical Lattice Spin WaveReceived 1 April 2009; published 10 July 2009 We propose and implement a scheme to produce long-lived entanglement between a signal field and a magnetically insensitive collective excitation in an atomic cloud cooled in a one-dimensional optical lattice. After a programmable storage time, we convert the spin-wave excitation into an idler field, and demonstrate violation of Bell’s inequality for storage times in excess of 3 ms. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.020505
DOI:
10.1103/PhysRevLett.103.020505
PACS:
03.67.Bg, 03.65.Ud, 37.10.Jk, 42.50.Dv
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