Back to Publications List       A high-flux entanglement source based on a doubly-resonant optical parametric amplifier C. E. Kuklewicz, E. Keskiner, F. N. C. Wong, and J. H. Shapiro J. Opt. B's Quantum and Semiclass. Opt. Abstract A 532-nm-pumped type-II phase-matched, doubly-resonant KTP optical parametric amplifier (OPA) was operated near frequency degeneracy to yield an inferred downconverted photon pair production rate of 1.7 x 106 /s at a pump power of 100mW. The OPA output consisted of three components: narrowband doubly-resonant mode pairs; narrowband singly-resonant mode pairs for which either the signal or idler was resonant with the cavity; and broadband nonresonant mode pairs. Under frequency-degenerate operation, the broadband nonresonant mode pairs were polarization triplet states. We observed quantum interference between the orthogonally-polarized photons of the triplet states when the were analyzed with a polarizer set at 45° relative to the OPA's output polarizations, leading to reduced coincidence counts.         Home | About the Program | Our Research | Publications | People Related MURIs | Contact © Massachusetts Institute of Technology