Entanglement swapping with quantum-memory-compatible photons

Jeongwan Jin; Marcel. li Grimau Puigibert; Lambert Giner; Joshua A. Slater; Michael R. E. Lamont; Varun B. Verma; M. D. Shaw; Francesco Marsili; Sae Woo Nam; Daniel Oblak; Wolfgang Tittel

doi:10.1103/PhysRevA.92.012329

Entanglement swapping with quantum-memory-compatible photons

Quantum Physics 2015-09-21 v1

Authors: Jeongwan Jin , Marcel. li Grimau Puigibert , Lambert Giner , Joshua A. Slater , Michael R. E. Lamont , Varun B. Verma , M. D. Shaw , Francesco Marsili , Sae Woo Nam , Daniel Oblak , Wolfgang Tittel

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Abstract

We report entanglement swapping with time-bin entangled photon pairs, each constituted of a 795 nm photon and a 1533 nm photon, that are created via spontaneous parametric down conversion in a non-linear crystal. After projecting the two 1533 nm photons onto a Bell state, entanglement between the two 795 nm photons is verified by means of quantum state tomography. As an important feature, the wavelength and bandwidth of the 795 nm photons is compatible with Tm:LiNbO3-based quantum memories, making our experiment an important step towards the realization of a quantum repeater.

Keywords

quantum entanglement quantum optics

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@article{arxiv.1506.03704,
  title  = {Entanglement swapping with quantum-memory-compatible photons},
  author = {Jeongwan Jin and Marcel. li Grimau Puigibert and Lambert Giner and Joshua A. Slater and Michael R. E. Lamont and Varun B. Verma and M. D. Shaw and Francesco Marsili and Sae Woo Nam and Daniel Oblak and Wolfgang Tittel},
  journal= {arXiv preprint arXiv:1506.03704},
  year   = {2015}
}

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Accepted in Phys. Rev. A

Entanglement swapping with quantum-memory-compatible photons

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