Back to Publications List       An ultrabright narrowband source of polarization-entangled photon pairs Jeffrey H. Shapiro and N. C. Wong J. Opt. B: Quantum Semiclass. Opt. 2, L1-L4 (2000). Abstract 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 is accompanied by an idler photon of the conjugate polarization i', and vice versa. For periodically poled lithium tantalate OPAs, the pair production rate is estimated to be approximately 1.5 x 106 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.         Home | About the Program | Our Research | Publications | People Related MURIs | Contact © Massachusetts Institute of Technology