4.6 Article

A radio-frequency Bose-Einstein condensate magnetometer

Journal

APPLIED PHYSICS LETTERS
Volume 120, Issue 16, Pages -

Publisher

AIP Publishing
DOI: 10.1063/5.0090776

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Funding

  1. Engineering and Physical Sciences Research Council (EPSRC) Impact Acceleration Account [EP/R511638/1]

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This study reports on a radio frequency magnetometer that utilizes a Bose-Einstein condensate of Rb-87 atoms held in a dipole trap. The magnetometer achieves different sensitivities at different probing volumes, providing flexibility for various applications.
We report on a radio frequency magnetometer employing a Bose-Einstein condensate of Rb-87 atoms held in a dipole trap. An AC sensitivity of 296 pT /root Hz is achieved at a probing volume of 3.2 x 10(-8) cm(3), leading to a volume-normalized sensitivity of 53 fT/root Hz cm(-3). At larger probing volumes with the atoms released from the magnetic trap used in the initial phase of the evaporation sequence, the AC sensitivity is improved to 1.4 pT/root Hz, allowing a two-mode approach for applications requiring improved sensitivity. Immediate application in high-resolution electromagnetic induction imaging is expected when compared to performance of other induction-based imaging platforms. (c) 2022 Author(s).All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY)license (http://creativecommons.org/licenses/by/4.0/).

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