压缩光光学磁强计。

Squeezed-light optical magnetometry.

机构信息

ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.

出版信息

Phys Rev Lett. 2010 Jul 30;105(5):053601. doi: 10.1103/PhysRevLett.105.053601. Epub 2010 Jul 29.

DOI:10.1103/PhysRevLett.105.053601

PMID:20867916

Abstract

We demonstrate a light-shot-noise-limited magnetometer based on the Faraday effect in a hot unpolarized ensemble of rubidium atoms. By using off-resonant, polarization-squeezed probe light, we improve the sensitivity of the magnetometer by 3.2 dB. The technique could improve the sensitivity of the most advanced magnetometers and quantum nondemolition measurements of atomic spin ensembles.

摘要

我们展示了一种基于热极化的铷原子中法拉第效应的光致噪声限制磁力计。通过使用非共振、偏振压缩的探测光，我们将磁力计的灵敏度提高了 3.2dB。该技术可以提高最先进的磁力计和原子自旋系综量子非破坏测量的灵敏度。