Femtosecond Time-Bin Entangled Qubits for Quantum Communication

Ivan Marcikic; Hugues de Riedmatten; Wolfgang Tittel; Valerio Scarani; Hugo Zbinden; Nicolas Gisin

doi:10.1103/PhysRevA.66.062308

Femtosecond Time-Bin Entangled Qubits for Quantum Communication

Quantum Physics 2016-09-08 v2

Authors: Ivan Marcikic , Hugues de Riedmatten , Wolfgang Tittel , Valerio Scarani , Hugo Zbinden , Nicolas Gisin

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Abstract

We create pairs of non-degenerate time-bin entangled photons at telecom wavelengths with ultra-short 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.

Keywords

quantum entanglement quantum photonics photon pair generation

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@article{arxiv.quant-ph/0205144,
  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},
  journal= {arXiv preprint arXiv:quant-ph/0205144},
  year   = {2016}
}

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6 pages, 7 figures

Femtosecond Time-Bin Entangled Qubits for Quantum Communication

Abstract

Keywords

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