期刊
ADVANCES IN PHOTONICS OF QUANTUM COMPUTING, MEMORY, AND COMMUNICATION IV
卷 7948, 期 -, 页码 -出版社
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.872624
关键词
electron spin resonance; magnetometry; nitrogen-vacancy center; diamond; quantum information; solid-state spectroscopy; color centers; microfludic; NMR
We demonstrate magnetometry by detection of the spin state of high-density nitrogen-vacancy (NV) ensembles in diamond using optical absorption at 1042 nm. With this technique, measurement contrast and collection efficiency can approach unity, leading to an increase in magnetic sensitivity compared to the more common method of collecting red fluorescence. Working at 75 K with a sensor with effective volume 50 x 50 x 300 mu m(3), we project photon shot-noise limited sensitivity of 5 pT in one second of acquisition and bandwidth from DC to a few MHz. Operation in a gradiometer configuration yields a noise floor of 7 nT(rms) at similar to 110 Hz in one second of acquisition. We also present measurements of the zero-fleld splitting parameters as a function of temperature, a calibration which is essential for ultra-sensitive magnetometry at low frequencies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据