Enantio-detection via cavity-assisted three-photon processes

TL;DR

This paper introduces a cavity-assisted three-photon process method for enantio-detection of chiral molecules, leveraging differences in photon generation phases to distinguish enantiomers without external cavity driving.

Contribution

It presents a novel cyclic three-level model for chiral molecules coupled with a cavity and classical fields, enabling enantio-detection through phase-dependent photon generation.

Findings

Photons are generated continuously in the cavity without external driving.

Photon phase differences depend on molecular chirality, enabling enantio-detection.

Potential for measuring enantiomeric excess in chiral mixtures.

Abstract

We propose a method for enantio-detection of chiral molecules based on a cavity-molecule system, where the left- and right-handed molecules are coupled with a cavity and two classical light fields to form cyclic three-level models. Via the cavity-assisted three-photon processes based on the cyclic three-level model, photons are generated continuously in the cavity even in the absence of external driving to the cavity. However, the photonic fields generated from the three-photon processes of left- and right-handed molecules differ with the phase difference {\pi} according to the inherent properties of electric-dipole transition moments of enantiomers. This provides a potential way to detect the enantiomeric excess of chiral mixture by monitoring the output field of the cavity.