Generation of polarization entangled photon pairs by a single crystal interferometric source pumped by femtosecond laser pulses
M. Barbieri, C. Cinelli, F. De Martini, P. Mataloni
Abstract
Photon pairs, highly entangled in polarization have been generated under femtosecond laser pulse excitation by a type I crystal source, operating in a single arm interferometric scheme. The relevant effects of temporal walk-off existing in these conditions between the ordinary and extraordinary photons were experimentally investigated. By introducing a suitable temporal compensation between the two orthogonal polarization components highly entangled pulsed states were obtained.
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