Femtosecond Time-Bin Entangled Qubits for Quantum Communication

@inproceedings{Marcikic2002FemtosecondTE,
  title={Femtosecond Time-Bin Entangled Qubits for Quantum Communication},
  author={Ivan Marcikic and Hugues de Riedmatten and Wolfgang Tittel and Valerio Scarani and Hugo Zbinden and Nicolas Gisin},
  year={2002}
}
We create pairs of non-degenerate 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… 

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