Journal
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
Volume 2, Issue 1, Pages L1-L4Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4266/2/1/101
Keywords
polarization entanglement; optical parametric amplifiers; photon statistics
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The signals and idlers from a pair of matched, doubly resonant optical parametric amplifiers (OPAs) can be combined to yield polarization-entangled vector signal and idler beams. Within any coincidence interval much longer than the OPA cavity lifetime, every signal photon of polarization (i) over right arrow is accompanied by an idler photon of the conjugate polarization (i) over right arrow', and vice versa. For periodically poled lithium tantalate OPAs, the pair production rate is estimated to be approximately 1.5 x 10(6) s(-1), within a 30 MHz bandwidth at a 795 nm centre wavelength and a 70 ns duration coincidence interval, using only 0.7 mW of pump power per OPA.
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