Effective discrimination of chiral molecules in a cavity

TL;DR

This paper proposes a cavity-based method using laser pulses to accurately distinguish chiral molecules by their handedness, achieving high success probability and robustness against noise and decoherence.

Contribution

The scheme introduces a novel cavity-assisted approach for chiral discrimination that does not require strong fields and is highly insensitive to errors and noise.

Findings

Nearly 100% discrimination success probability.

Robustness against errors, noise, and decoherence.

Effective for precise chiral molecule identification.

Abstract

We present a scheme to realize precise discrimination of chiral molecules in a cavity. Assisted by additional laser pulses, cavity fields can evolve to different coherence states with contrary-sign displacements according to the handedness of molecules. Consequently, the handedness of molecules can be read out with homodyne measurement on the cavity, and the successful probability is nearly unity without very strong cavity fields. Numerical results show that the scheme is insensitive to errors, noise and decoherence. Therefore, the scheme may provide helpful perspectives for accurate discrimination of chiral molecules.