Atomic dispensers for thermoplasmonic control of alkali vapor pressure in quantum optical applications

Kristina R. Rusimova, Dimitar Slavov, Fabienne Pradaux-Caggiano, Joel T. Collins, Sergey N. Gordeev, David R. Carbery, William J. Wadsworth, Peter J. Mosley and Ventsislav K. Valev ()
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Kristina R. Rusimova: University of Bath
Dimitar Slavov: Institute of Electronics, Bulgarian Academy of Sciences
Fabienne Pradaux-Caggiano: University of Bath
Joel T. Collins: University of Bath
Sergey N. Gordeev: University of Bath
David R. Carbery: University of Bath
William J. Wadsworth: University of Bath
Peter J. Mosley: University of Bath
Ventsislav K. Valev: University of Bath

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Alkali metal vapors enable access to single electron systems, suitable for demonstrating fundamental light-matter interactions and promising for quantum logic operations, storage and sensing. However, progress is hampered by the need for robust and repeatable control over the atomic vapor density and over the associated optical depth. Until now, a moderate improvement of the optical depth was attainable through bulk heating or laser desorption – both time-consuming techniques. Here, we use plasmonic nanoparticles to convert light into localized thermal energy and to achieve optical depths in warm vapors, corresponding to a ~16 times increase in vapor pressure in less than 20 ms, with possible reload times much shorter than an hour. Our results enable robust and compact light-matter devices, such as efficient quantum memories and photon-photon logic gates, in which strong optical nonlinearities are crucial.

Date: 2019
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DOI: 10.1038/s41467-019-10158-4

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