CaltechAUTHORS
Published May 31, 2022 | Version Published
Book Section - Chapter Open

A long-lived spectrally multiplexed solid-state optical quantum memory for high-rate quantum repeaters

Creators

  • 1. ROR icon Delft University of Technology
  • 2. ROR icon Harvard University
  • 3. ROR icon University of Calgary
  • 4. ROR icon Montana State University

Contributors

Abstract

Long optical storage times are an essential requirement to establish high-rate entanglement distribution over large distances using memory-based quantum repeaters. Rare earth ion-doped crystals are arguably well-suited candidates for building such quantum memories. Toward this end, we investigate the 795.32 nm ³H₆ ↔ ³H₄ transition of 1% thulium-doped yttrium gallium garnet crystal (Tm³⁺:Y₃Ga₅O₁₂ : Tm³⁺:YGG). Most essentially, we find that the optical coherence time can reach 1.1 ms, and, using laser pulses, we demonstrate optical storage based on the atomic frequency comb (AFC) protocol up to 100 µs. In addition, we demonstrate multiplexed storage, including feed-forward selection, shifting, and filtering of spectral modes, as well as quantum state storage using members of non-classical photon pairs. Our results show that Tm:YGG can be a potential candidate for creating multiplexed quantum memories with long optical storage times.

Additional Information

© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors thank T. Chakraborty and O. P. I. Casas for experimental help and M. Afzelius for discussions. We acknowledge funding through the Netherlands Organization for Scientific Research (NWO), the European Unions Horizon 2020 Research and Innovation Program under Grant Agreement No. 820445 and Project Name Quantum Internet Alliance (QIA), Alberta Innovates Technology Futures, the National Sciences and Engineering Research Council of Canada, the Alberta Ministry of Jobs, Economy and Innovation's Major Innovation Fund Project on Quantum Technologies. Furthermore, W. T. acknowledges funding as a Senior Fellow of the Canadian Institute for Advanced Research (CIFAR). The crystal, used for this experiment, is based in part on research at Montana State University sponsored by Air Force Research Laboratory under Agreement No. FA8750-20-1-1004.

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Additional details

Identifiers

Eprint ID
116177
Resolver ID
CaltechAUTHORS:20220808-886913000

Funding

Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
European Research Council (ERC)
820445
Alberta Innovates Technology Futures
Natural Sciences and Engineering Research Council of Canada (NSERC)
Alberta Ministry for Jobs, Economy and Innovation
Canadian Institute for Advanced Research (CIFAR)
Air Force Research Laboratory (AFRL)
FA8750-20-1-1004

Dates

Created
2022-08-12
Created from EPrint's datestamp field
Updated
2022-08-12
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
INQNET
Series Name
Proceedings of SPIE
Series Volume or Issue Number
12133