Quantum Storage of Frequency-Multiplexed Heralded Single Photons

Alessandro Seri, Dario Lago-Rivera, Andreas Lenhard, Giacomo Corrielli, Roberto Osellame, Margherita Mazzera, and Hugues de Riedmatten
Phys. Rev. Lett. 123, 080502 – Published 22 August 2019
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Abstract

We report on the quantum storage of a heralded frequency-multiplexed single photon in an integrated laser-written rare-earth doped waveguide. The single photon contains 15 discrete frequency modes separated by 261 MHz and spanning across 4 GHz. It is obtained from a nondegenerate photon pair created via cavity-enhanced spontaneous down-conversion, where the heralding photon is at telecom wavelength and the heralded photon is at 606 nm. The frequency-multimode photon is stored in a praseodymium-doped waveguide using the atomic frequency comb (AFC) scheme, by creating multiple combs within the inhomogeneous broadening of the crystal. Thanks to the intrinsic temporal multimodality of the AFC scheme, each spectral bin includes 9 temporal modes, such that the total number of stored modes is about 130. We demonstrate that the storage preserves the nonclassical properties of the single photon, and its normalized frequency spectrum.

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  • Received 20 December 2018
  • Revised 29 March 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.080502

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Alessandro Seri1,*,†, Dario Lago-Rivera1,*, Andreas Lenhard1, Giacomo Corrielli2, Roberto Osellame2, Margherita Mazzera1, and Hugues de Riedmatten1,3

  • 1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Technology, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
  • 2Istituto di Fotonica e Nanotecnologie (IFN)—CNR and Dipartimento di Fisica—Politecnico di Milano, P.zza Leonardo da Vinci 32, 20133 Milano, Italy
  • 3ICREA-Institució Catalana de Recerca i Estudis Avançats, 08015 Barcelona, Spain

  • *These authors contributed equally to this work.
  • alessandro.seri@icfo.eu

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Issue

Vol. 123, Iss. 8 — 23 August 2019

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