Microwave control of coupling parameters in spinor alkali condensates

V. Cheianov; A. L. Chudnovskiy

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arXiv · 1705.01478

Microwave control of coupling parameters in spinor alkali condensates

V. Cheianov·A. L. Chudnovskiy

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Abstract

We propose a protocol which utilises radio frequency magnetic pulses in order to tune the effective two-particle scattering amplitudes for alkali atoms in the $F=1$ hyperfine ground state. Unlike the Feshbach resonance method, the proposed protocol preserves with controllable accuracy the global rotational symmetry in the spin space offering access to a broad region of the phase diagram of the rotationally-symmetric spinor Bose condensate. Examples of $^{41}$K and $^{7}$Li are considered and it is shown that for these atoms sufficient variation in the effective coupling constants can be achieved in order to explore phase transitions between different symmetry-broken phases of the condensate.

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V. Cheianov, A. L. Chudnovskiy. 2017-05-03. Microwave control of coupling parameters in spinor alkali condensates. https://arxiv.org/abs/1705.01478

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