Cavity-assisted generation of entangled photons from a V-type three-level system

Details Cavity-assisted generation of entangled photons from a V-type three-level system Cavity-assisted generation of entangled photons from a V-type three-level system

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11c3033a&link_type=abstract

New Journal of Physics, Volume 11, Issue 3, pp. 033033 (2009).

Physics

Scientific paper

We propose a new type of entangled-photon generation from a V-type system in a microcavity. In contrast to the entangled-photon generation until now, all four Bell states can be freely generated from an identical cavity system by simply selecting applied-field polarizations and frequencies due to the excitation of dressed states in cavity quantum electrodynamics (CQED). CQED effects play a crucial role in providing a high degree of entanglement: (i) spectral filtering can be used to extract entangled photons due to the vacuum Rabi splitting and (ii) non-entangled co-polarized photons are strongly suppressed due to the photon blockade effect. The proposed system efficiently generates a high degree of entangled photons by moderately increasing the applied-field intensity.

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