发表刊物：IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
关键字：Atomic magnetometer, metafiber, multifunctional, quantum sensing and measurement
摘要：A miniaturized spin-exchange relaxation-free(SERF) atomic magnetometer is an ultrasensitive device for biomagnetic dynamic measurements, yet it still remains challenging to realize easy-to-align and compact optical configuration while maintaining high sensitivity. In this study, we demonstrate a multifunctional metafiber, consisting of a compact metalens assembled on the facet of an optical fiber, for flexible and high-performance pump light delivery and manipulation in atomic magnetometers for the first time. By tailoring transmission and phase profiles of nanopillars, the metafiber simultaneously enables broadband collimation and polarization manipulation from 770 to 894 nm, a spectrum regime that covers the most commonly used alkali metals in quantum technologies. We integrate the metafiber with an SERF atomic magnetometer and achieve magnetic field measurement with a sensitivity of 51.12 fTHz−1/2(at 31.5 Hz). Beyond optically interfaced quantum systems, the demonstrated highly compact and easy-to-align multifunctional metafiber can also find widespread classical applications such as wavelength-multiplexing fiber-optic communications, fiber sensing, and fiber lasers.
合写作者：刘颖,段利红
第一作者：宋清澄,栾汶林
通讯作者：余霞
是否译文：否
发表时间：2025-04-01
收录刊物：SCI