Simple performance evaluation of pulsed spontaneous parametric down-conversion sources for quantum communications

• DOI: 10.1364/oe.19.000616
• Publication Date: 2011-01-05T19:05:55Z
• Authors: Jean-Loup Smirr; Sylvain Guilbaud; Joe Ghalbouni; Robert Frey; Eleni Diamanti; Romain Alléaume; Isabelle Zaquine
• Keywords: Spontaneous parametric down-conversion; Quantum key distribution; Amplified spontaneous emission; High fidelity

Fast and complete characterization of pulsed spontaneous parametric down conversion (SPDC) sources is important for applications in quantum information processing communications. We propose a simple method to perform this task, which only requires measuring the counts on two output channels coincidences between them, as well modeling filter used reduce source bandwidth. The proposed experimentally tested evaluation SPDC (pair emission probability, total losses, fidelity) different bandwidths. This can find setting up continuous verification quality communication links.