Probing vacuum-induced coherence via magneto-optical rotation in molecular systems

TL;DR

This paper theoretically explores how vacuum-induced coherence (VIC) can significantly enhance magneto-optical rotation (MOR) in molecular systems, enabling sensitive magnetic field detection and probing VIC effects.

Contribution

It introduces a model showing VIC combined with a control laser and magnetic field can greatly increase MOR without circular dichroism, useful for sensing.

Findings

VIC can induce large MOR angles in molecular gases

Enhanced MOR enables sensitive magnetic field measurements

VIC effects can be probed using MOR in cold molecular gases

Abstract

We investigate theoretically the effects of vacuum-induced coherence (VIC) on magneto-optical rotation (MOR). We carry out a model study to show that VIC in the presence of a control laser and a magnetic field can lead to large enhancement in the rotation of the plane of polarization of a linearly polarized weak laser with vanishing circular dichroism. This effect can be realized in cold molecular gases and may be used as a sensitive probe for VIC. Such a large MOR angle can also be used to detect weak magnetic field with large measurement sensitivity.