Abstract

Using four-wave mixing in a hot atomic vapor, we generate a pair of entangled twin beams in the microsecond pulsed regime near the D1 line of Rb-85, making it compatible with commonly used quantum memory techniques. The beams are generated in the bright and vacuum-squeezed regimes, requiring two separate methods of analysis, without and with local oscillators, respectively. We report a noise reduction of up to 3.8+/-0.2 dB below the standard quantum limit in the pulsed regime and a level of entanglement that violates an Einstein-Podolsky-Rosen inequality.

Publication Details
Publication Type
Journal Article
Year of Publication
2012
Volume
14
DOI
10.1088/1367-2630/14/12/123024
Journal
New Journal of Physics
Contributors