Yintao Ma

Abstract Rydberg-atom electrometry, as an emerging cutting-edge technology, features high sensitivity, broad bandwidth, calibration-free operation, and beyond. However, until now the key atomic vapor cells used for confining electric field-sensitive Rydberg atoms nearly made with traditional glass-blown techniques, hindering the miniaturization, integration, and batch manufacturing.

Abstract Accurate measurement of strong magnetic fields in the Tesla range remains a persistent challenge due to calibration drift, nonlinearity, and spatial gradient sensitivity. Here, we present a compact magnetometry approach based on sideband-overlap Zeeman spectroscopy, enabled by a functionalized MEMS cesium vapor cell. The vapor cell features a dual-chamber glass–Si–glass structure with integrated microheaters on the optical window.

We demonstrate continuous Pound-Drever-Hall (PDH) nondestructive monitoring of the electron spin polarization of an atomic vapor in a microfabricated vapor cell within an optical resonator. The two-chamber silicon and glass cell contains 87Rb and 1.3 amg of N2 buffer gas, and is placed within a planar optical resonator formed by two mirrors with dichroic dielectric coatings to resonantly enhance the coupling to phase-modulated probe light near the D2 line at 780 nm.