Quantum storage of photonic entanglement in a crystal

Christoph Clausen, Imam Usmani, Félix Bussières, Nicolas Sangouard, Mikael Afzelius (), Hugues de Riedmatten and Nicolas Gisin
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Christoph Clausen: Group of Applied Physics, University of Geneva
Imam Usmani: Group of Applied Physics, University of Geneva
Félix Bussières: Group of Applied Physics, University of Geneva
Nicolas Sangouard: Group of Applied Physics, University of Geneva
Mikael Afzelius: Group of Applied Physics, University of Geneva
Hugues de Riedmatten: Group of Applied Physics, University of Geneva
Nicolas Gisin: Group of Applied Physics, University of Geneva

Nature, 2011, vol. 469, issue 7331, 508-511

Abstract: Solid quantum memory progress Harnessing entanglement between light and material systems is of interest for future quantum information technologies. Two groups report advances in the development of the light–matter quantum interface that could pave the way for the construction of multiplexed quantum repeaters for long-distance quantum networks. Clausen et al. demonstrate entanglement between a photon at the telecommunication wavelength (1,338 nanometres) and a single collective atomic excitation stored in a neodymium-doped Y2SiO5 crystal. Saglamyurek et al. use a thulium-doped LiNbO3 waveguide to achieve a similar entanglement.

Date: 2011
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DOI: 10.1038/nature09662

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