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

Das, Antariksha and Askarani, Mohsen F. and Davidson, Jacob H. and Amaral, Gustavo C. and Sinclair, Neil and Slater, Joshua A. and Marzban, Sara and Oblak, Daniel and Thiel, Charles W. and Cone, Rufus L. and Tittel, Wolfgang (2022) A long-lived spectrally multiplexed solid-state optical quantum memory for high-rate quantum repeaters. In: Quantum Technologies 2022. Proceedings of SPIE. No.12133. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, Art. No. 1213305. ISBN 9781510651432.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Das, Antariksha0000-0002-4248-087X
Askarani, Mohsen F.0000-0002-9571-8466
Amaral, Gustavo C.0000-0001-6071-7458
Oblak, Daniel0000-0002-0277-3360
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.
Funding AgencyGrant Number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
European Research Council (ERC)820445
Alberta Innovates Technology FuturesUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Alberta Ministry for Jobs, Economy and InnovationUNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Air Force Research Laboratory (AFRL)FA8750-20-1-1004
Subject Keywords:Quantum Repeater, Quantum Memory, Rare-earth-ion-doped Crystal
Series Name:Proceedings of SPIE
Issue or Number:12133
Record Number:CaltechAUTHORS:20220808-886913000
Persistent URL:
Official Citation:Antariksha Das, Mohsen F. Askarani, Jacob H. Davidson, Gustavo C. Amaral, Neil Sinclair, Joshua A. Slater, Sara Marzban, Daniel Oblak, Charles W. Thiel, Rufus L. Cone, and Wolfgang Tittel "A long-lived spectrally multiplexed solid-state optical quantum memory for high-rate quantum repeaters", Proc. SPIE 12133, Quantum Technologies 2022, 1213305 (31 May 2022);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:116177
Deposited By: George Porter
Deposited On:12 Aug 2022 19:58
Last Modified:12 Aug 2022 19:58

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