Nonlinear optical magnetometry with accessible in situ optical squeezing

Abstract

We demonstrate compact and accessible squeezed-light magnetometry using four-wave mixing in a single hot rubidium vapor cell. The strong intrinsic coherence of the four wave mixing process results in nonlinear magneto-optical rotation (NMOR) on each mode of a two mode relative-intensity squeezed state. This framework enables 4.7 dB of quantum noise reduction while the opposing polarization rotation signals of the probe and conjugate fields add to increase the total signal to noise ratio.

References in corpus (4)

• Strong relative intensity squeezing by 4-wave mixing in Rb vapor
• Strong low-frequency quantum correlations from a four-wave mixing amplifier
• Squeezed-Light Optical Magnetometry
• Toward real-time quantum imaging with a single pixel camera