Nuclear Spin Squeezing in Helium-3 by Continuous Quantum Nondemolition Measurement

Serafin, Alan and Fadel, Matteo and Treutlein, Philipp and Sinatra, Alice. (2021) Nuclear Spin Squeezing in Helium-3 by Continuous Quantum Nondemolition Measurement. Physical Review Letters, 127 (1). 013601.

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Official URL: https://edoc.unibas.ch/87535/

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We propose a technique to control the macroscopic collective nuclear spin of a Helium-3 vapor in
the quantum regime using light. The scheme relies on metastability exchange collisions to mediate
interactions between optically accessible metastable states and the ground-state nuclear spin, giving
rise to an effective nuclear spin-light quantum nondemolition interaction of the Faraday form. Our
technique enables measurement-based quantum control of nuclear spins, such as the preparation of
spin-squeezed states. This, combined with the day-long coherence time of nuclear spin states in
Helium-3, opens the possibility for a number of applications in quantum technology
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentelle Nanophysik (Treutlein)
UniBasel Contributors:Treutlein, Philipp and Fadel, Matteo
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
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Last Modified:07 Apr 2022 08:14
Deposited On:07 Apr 2022 08:14

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