Degree of entanglement of photon pairs generated from V‐type system in microcavity
Hiroshi Ajiki, Hajime Ishihara · Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics · 2008
Abstract We propose polarization‐entangled photon generation via resonant hyper‐parametric scattering of a V‐type system in microcavity. Although a bare V‐type system cannot generate entangled photon pairs, microcavity makes the generation possible because of the formation of dressed states. In the strong‐coupling limit, generation of non‐entangled co‐polarized photons is considerably suppressed due to the photon blockade effect. Furthermore, some entangled photons have different frequencies from those of the input fields, and thus, we can utilize spectral filtering in order to extract entangled photons. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)