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Polarization-entangled photon pairs using spontaneous four-wave mixing in a fib...
Almeida, Álvaro J.; Carneiro, Steven R.; Silva, Nuno A.; Muga, Nelson J.; Pinto, Armando N.We generate polarization-entangled photon pairs in the 1550-nm wavelength telecom band, using spontaneous fourwave mixing in a highly nonlinear fiber loop. With accidental coincidences subtracted, we obtain coincidence fringes with visibilities greater than 86%, and thus observe a violation of Clauser, Horne, Shimony and Holt (CHSH) inequality by 2.7 standard deviations. The experimental setup is built using on...
Time coincidence of entangled photon pairs using spontaneous four-wave mixing i...
Almeida, Álvaro J.; Carneiro, Steven R.; Silva, Nuno A.; Muga, Nelson J.; Pinto, Armando N.We obtained a source of entangled photon pairs in the 1550-nm wavelength band using spontaneous four-wave mixing (SpFWM) in a Sagnac fiber loop. Time coincidence of entangled photon pairs was verified for a 300-m dispersion-shifted fiber (DSF), using an avalanche photodiode (APD). ; QuantTel - Quantum Secure Telecommunications ; Quant- PrivTel - Quantum Private Telecommunications - PTDC/EEATEL/ 103402/2008
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