Time-bin entangled qubits for quantum communication created by femtosecond pulses

By I. Marcikic, Hugues de Riedmatten, Wolfgang Tittel, Valerio Scarani, H. Zbinden, Nicolas Gisin. 2002

226 citations recorded by the source corpus.

We create pairs of nondegenerate time-bin entangled photons at telecom wavelengths with ultrashort pump pulses. Entanglement is shown by performing Bell kind tests of the Franson type with visibilities of up to 91%. As time-bin entanglement can easily be protected from decoherence as encountered in optical fibers, this experiment opens the road for complex quantum communication protocols over long distances. We also investigate the creation of more than one photon pair in a laser pulse and present a simple tool to quantify the probability of such events to happen.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/1b8492f44e2dbddac8eae5bb5d0af3cf98c9e94c

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Optical quantum memory (2009, background): “Other examples include path [4], photon-number [5, 6], and time-bin encodings [7].”
Micrometer-scale integrated silicon source of time-energy entangled photons (2014, background): “As all emission times are equivalent, the signal-to-noise ratio (SNR) is also an indication of how likely it is for multiple pairs to be generated at the same time [29].”
Multiphoton entanglement and interferometry (2008, background): “A pulsed-pump version of Franson-interferometry is called time-bin entanglement (Brendel et al., 1999; Marcikic et al., 2002; Gisin et al., 2002), and is good for practical applications (see Fig.”