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

Stand-alone vacuum cell for compact ultracold quantum technologies

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

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Miscellaneous Poster session


In the drive to develop cold-atom quantum technologies, compact vacuum systems are key to enabling quantum sensing for real world applications. These vacuum systems not only have to be reduced in size, weight, and power compared to their traditional counterparts, but face other challenges. Eliminating active pumping addresses both size and power, but introduces the issue of helium gas permeation as passive vacuum pumping techniques do not remove noble gases. Here we present a centilitre-scale vacuum cell, constructed from low helium permeable materials, with an integrated grating magneto-optical trap optic. A robust cold-atom demonstrator is described, loading 107 s-1 laser-cooled 87Rb, with 12 W of electrical power through a USB battery and optical power delivered by fibre. Under active vacuum pumping, with continuous Rb gas emission, a pressure equilibrium of 10-7 mbar is achieved. With purely passive vacuum pumping the pressure stabilises to 3 x 10-6 mbar with a 17-day time constant, and has been demonstrated to work for two years with only passive vacuum pumping. This research continues to advance and will enable a wide range of cold-atom quantum sensors.
Appl. Phys. Lett. 119, 124002 (2021); doi: 10.1063/5.0061010

Presenter name Dr. Oliver Burrow

Primary authors

Dr Oliver Burrow (University of Strathclyde) Dr Paul F. Griffin (University of Strathclyde) Dr Aidan S. Arnold (University of Strathclyde) Prof. Erling Riis (University of Strathclyde)

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