Enantioselective switch on radiations of dissipative chiral molecules

TL;DR

This paper introduces a novel enantioselective radiative switching method for chiral molecules that maintains high enantioselectivity across all decoherence levels, surpassing traditional techniques.

Contribution

The authors develop a new chiroptical method that enables enantiodetection in all decoherence regimes by selectively turning radiation on or off for each enantiomer.

Findings

Achieves ultimate enantioselectivity limits in all decoherence regions.

Enables enantiodetection without being limited by decoherence effects.

Offers advantages over traditional chiroptical methods in efficiency and robustness.

Abstract

Enantiodetection is an important and challenging task across natural science. Nowadays, some chiroptical methods of enantiodetection based on decoherence-free cyclic three-level models of chiral molecules can reach the ultimate limit of the enantioselectivities in the molecular responses. They are thus more efficient than traditional chiroptical methods. However, decoherence is inevitable and can severely reduce enantioselectivities in these advanced chiroptical methods, so they only work well in the weak decoherence region. Here, we propose an enantioselective switch on the radiation of dissipative chiral molecules and develop a novel chiroptical method of enantiodetection working well in all decoherence regions. In our scheme, radiation is turned on for the selected enantiomer and simultaneously turned off for its mirror image by designing the electromagnetic fields well based on dissipative cyclic three-level models. The enantiomeric excess of a chiral mixture is determined by comparing its emissions in two cases, where the radiations of two enantiomers are turned off respectively. The corresponding enantioselectivities reach the ultimate limit in all decoherence regions, offering our scheme advantages over other chiroptical methods in enantiodetection. Our work potentially constitutes the starting point for developing more efficient chiroptical techniques for enantiodection in all decoherence regions.