Storage and analysis of light-matter entanglement in a fiber-integrated system

Jelena V. Rakonjac, Giacomo Corrielli, Dario Lago-Rivera, Alessandro Seri, Margherita Mazzera, Samuele Grandi*, Roberto Osellame, Hugues de Riedmatten

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

The deployment of a full-fledged quantum internet poses the challenge of finding adequate building blocks for entanglement distribution between remote quantum nodes. A practical system would combine propagation in optical fibers with quantum memories for light, leveraging on the existing communication network while featuring the scalability required to extend to network sizes. Here, we demonstrate a fiber-integrated quantum memory entangled with a photon at telecommunication wavelength. The storage device is based on a fiber-pigtailed laser-written waveguide in a rare earth-doped solid and allows an all-fiber stable addressing of the memory. The analysis of the entanglement is performed using fiber-based interferometers. Our results feature orders-of-magnitude advances in terms of storage time and efficiency for integrated storage of light-matter entanglement and constitute a substantial step forward toward quantum networks using integrated devices.

Original languageEnglish
Article numberabn3919
JournalScience Advances
Volume8
Issue number27
DOIs
Publication statusPublished - 8 Jul 2022

ASJC Scopus subject areas

  • General

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