Magnetic Dipolar Interaction between Hyperfine Clock States in a Planar Alkali Bose Gas - Sorbonne Université
Journal Articles Physical Review Letters Year : 2020

Magnetic Dipolar Interaction between Hyperfine Clock States in a Planar Alkali Bose Gas

S. Nascimbene
J. Dalibard
J. Beugnon

Abstract

In atomic systems, clock states feature a zero projection of the total angular momentum and thus a low sensitivity to magnetic fields. This makes them widely used for metrological applications like atomic fountains or gravimeters. Here, we show that a mixture of two such non-magnetic states still display magnetic dipole-dipole interactions. Using high resolution spectroscopy of a planar gas of 87Rb atoms with a controlled in-plane shape, we explore the effective isotropic and extensive character of these interactions and demonstrate their tunability. Our measurements set strong constraints on the relative values of the s-wave scattering lengths aij involving the two clock states
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Dates and versions

hal-03081535 , version 1 (18-12-2020)

Identifiers

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Y. -Q. Zou, Brice Bakkali-Hassani, C. Maury, É. Le Cerf, S. Nascimbene, et al.. Magnetic Dipolar Interaction between Hyperfine Clock States in a Planar Alkali Bose Gas. Physical Review Letters, 2020, 125 (23), ⟨10.1103/PhysRevLett.125.233604⟩. ⟨hal-03081535⟩
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