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New classes of systematic effects in gas spin co-magnetometers
Dong Sheng, Aaron Kabcenell, Michael V. Romalis
Atomic co-magnetometers are widely used in precision measurements searching for spin interactions beyond the Standard Model. We describe a new He-Xe co-magnetometer pro…
Spin Damping in an RF Atomic Magnetometer
Orang Alem, Karen L. Sauer, Mike V. Romalis
Under negative feedback, the quality factor Q of a radio-frequency magnetometer can be decreased by more than two orders of magnitude, so that any initial perturbation of the polar…
Constraints on short-range spin-dependent interactions from scalar spin-spin coupling in deuterated molecular hydrogen
Micah Ledbetter, Michael Romalis, Derek Jackson-Kimball
A comparison between existing measurements and calculations of the scalar spin-spin interaction (J-coupling) in deuterated molecular hydrogen (HD) yields stringent constraints on a…
Very large optical rotation generated by Rb vapor in a multi-pass cell
S. Li, P. Vachaspati, D. Sheng +2
Paramagnetic Faraday rotation is a powerful technique for atom sensing widely used in quantum non-demolition measurements, fundamental symmetry tests, and other precision measureme…
Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer
H. B. Dang, A. C. Maloof, M. V. Romalis
We describe an ultra-sensitive atomic magnetometer using optically-pumped potassium atoms operating in spin-exchange relaxation free (SERF) regime. We demonstrate magnetic field se…
Spin-Exchange-Relaxation-Free Magnetometry Using Elliptically-Polarized Light
V. Shah, M. V. Romalis
Spin-exchange relaxation free alkali-metal magnetometers typically operate in the regime of high optical density, presenting challenges for simple and efficient optical pumping and…