# Optically-Induced Highly-Efficient Detection and Separation of Chiral Molecules through Shortcuts to Adiabaticity

## TL;DR

This paper introduces a highly-efficient optical method for detecting and separating chiral molecules by exploiting phase-sensitive population dynamics in a three-state system, achieving perfect contrast using shortcuts to adiabaticity.

## Contribution

It presents a novel phase-sensitive scheme utilizing shortcuts to adiabaticity for 100% contrast in chiral molecule detection and separation.

## Key findings

- Achieves 100% population transfer contrast between enantiomers.
- Uses phase-dependent population dynamics for chirality discrimination.
- Applicable at both ensemble and single-molecule levels.

## Abstract

A highly-efficient method for optical detection and separation of left- and right-handed chiral molecules is presented. The method utilizes a closed-loop three-state system in which the population dynamics depends on the phases of the three couplings. Due to the different signs of the coupling between two of the states for the opposite chiralities and the phase sensitivity of the scheme, the population dynamics is chirality-dependent. By using concepts from the `shortcuts to adiabaticity' approach, one can achieve 100\% contrast in state population transfer between the two enantiomers, which can be probed by light-induced fluorescence in the case of large ensembles or through resonantly-enhanced multiphoton ionization at the single molecular level.