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 In Proc. Seventh International Conference on Squeezed States and Uncertainty Relations, Boston, June 2001 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 1.8 x 106 /s at a pump power of 100µW. 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 they 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