Quantum lock-in detection of a vector light shift
Quantum Gases
2021-05-05 v1
Abstract
We demonstrate detection of a vector light shift (VLS) using the quantum lock-in method. The method offers precise and accurate VLS measurement without being affected by real magnetic field fluctuations. We detect a VLS on a Bose--Einstein condensate (BEC) of Rb atoms caused by an optical trap beam with a resolution less than 1 Hz. We also demonstrate elimination of a VLS by controlling the beam polarization to realize a long coherence time of a transversally polarized = 2 BEC. Quantum lock-in VLS detection should find wide application, including the study of spinor BECs, electric-dipole moment searches, and precise magnetometry.
Cite
@article{arxiv.2101.09102,
title = {Quantum lock-in detection of a vector light shift},
author = {Kosuke Shibata and Naota Sekiguchi and Takuya Hirano},
journal= {arXiv preprint arXiv:2101.09102},
year = {2021}
}
Comments
6 pages, 5 figures