Polarization-entangled photon pairs using spontaneous four-wave mixing in a fib...

• Autor(es): Almeida, Álvaro J. ; Carneiro, Steven R. ; Silva, Nuno A. ; Muga, Nelson J. ; Pinto, Armando N.
• Data: 2011
• Identificador Persistente: http://hdl.handle.net/10773/6278
• Origem: RIA - Repositório Institucional da Universidade de Aveiro
• Assunto(s): Spontaneous four-wave mixing; Quantum entanglement; Sagnac fiber loop; Coincidence
• Tipo de Documento: Documento de conferência
• Idioma: Inglês

Descrição

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 only fiber connections, which contribute to its long time stability. QuantTel - Quantum Secure Telecommunications QuantPrivTel - Quantum Private Telecommunications - PTDC/EEATEL/ 103402/2008