17-22 July 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Development towards a hybrid quantum repeater

18 Jul 2022, 17:00
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum optics and hybrid quantum systems Poster session


We describe our progress in developing a proof-of-principle hybrid quantum repeater based on laser-cooled caesium ensembles and a semiconductor quantum dot. The atoms here can be used as a quantum memory or as a non-linear medium whilst the quantum dot can be used as a bright source of entangled photon pairs. The laser cooled atoms are loaded inside a hollow-core fiber to achieve an optical depth $\sim$1000. This has the potential to enable strong interactions with photons emitted by the quantum dot, which have bandwidth of $\sim$1 GHz and can be tuned to match the cesium D$_1$ line. The atoms confined in the hollow-core fiber can be used to store single photons from the quantum dot and to realize single-photon wavelength conversions for quantum key distribution (QKD) via ground-to-satellite or telecom-fiber links.

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Presenter name Katie McDonnell

Primary authors

Dr Katie McDonnell (University of Waterloo) Dr Rubayet Al Maruf (University of Waterloo) Paul Anderson (University of Waterloo) Sai Sreesh Venuturumilli (University of Waterloo) Nikolay Videnov (University of Waterloo) Yujia Yuan (University of Waterloo) Dr Dan Dalacu (National Research Council of Canada) Dr Philip J. Poole (National Research Council of Canada) Dr Michael Reimer (University of Waterloo) Prof. Michal Bajcsy (University of Waterloo)

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