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Quantum storage of heralded single photons in a praseodymium-doped crystal

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posted on 2023-06-09, 13:41 authored by Daniel Rieländer, Kutlu Kutluer, Patrick M Ledingham, Mustafa Gündogan, Julia FeketeJulia Fekete, Margherita Mazzera, Hugues de Riedmatten
We report on experiments demonstrating the reversible mapping of heralded single photons to long-lived collective optical atomic excitations stored in a Pr3+:Y2SiO5 crystal. A cavity-enhanced spontaneous down-conversion source is employed to produce widely nondegenerate narrow-band (˜2 MHz) photon pairs. The idler photons, whose frequency is compatible with telecommunication optical fibers, are used to herald the creation of the signal photons, compatible with the Pr3þ transition. The signal photons are stored and retrieved using the atomic frequency comb protocol. We demonstrate storage times up to 4.5 µs while preserving nonclassical correlations between the heralding and the retrieved photon. This is more than 20 times longer than in previous realizations in solid state devices, and implemented in a system ideally suited for the extension to spin-wave storage.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

040504

Volume

112

Page range

1-5

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-06-08

First Open Access (FOA) Date

2018-06-08

First Compliant Deposit (FCD) Date

2018-06-07

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