Optical-pumping enantio-conversion of chiral mixtures in presence of tunneling between chiral states

Abstract

Enantio-conversion of chiral mixtures, converting the mixtures composed of left- and right-handed chiral molecules into the homochiral ensembles, has become an important research topic in chemical and biological fields. In previous studies on enantio-conversion, the tunneling interaction between the left- and right-handed chiral states was often neglected. However, for certain chiral molecules, this tunneling interaction is significant and cannot be ignored. Here we propose a scheme for enantio-conversion of chiral mixtures through optical pumping based on a four-level model of chiral molecules, comprising two chiral ground states and two achiral excited states, with a tunneling interaction between the chiral states. Under one-photon large detuning and two-photon resonance conditions, one of the achiral excited states is eliminated adiabatically. By well designing the detuning and coupling strengths of the electromagnetic fields, the tunneling interaction between two chiral states and the interaction between one of the chiral states and the remaining achiral excited state can be eliminated. Consequently, one chiral state remains unchanged, while the other can be excited to an achiral excited state, establishing chiral-state-selective excitations. By numerically calculating the populations of two chiral ground states and the enantiomeric excess, we observe that high-efficiency enantio-conversion is achieved under the combined effects of system dissipation and chiral-state-selective excitations.

14 pages, 6 figures

References in corpus (29)

• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Enantiomer-Specific State Transfer of Chiral Molecules
• Generalized Stern-Gerlach Effect for Chiral Molecules
• Single-qubit lasing and cooling at the Rabi frequency
• Optically-Induced Highly-Efficient Detection and Separation of Chiral Molecules through Shortcuts to Adiabaticity
• Controlled enantioselective orientation of chiral molecules with an optical centrifuge
• Principles of enantio-selective excitation in three-wave mixing spectroscopy of chiral molecules
• Dynamic method to distinguish between left- and right-handed chiral molecules
• Two-path interference for enantiomer-selective state transfer of chiral molecules
• Robust and highly-efficient discrimination of chiral molecules through three-mode parallel paths
• Effect of molecular rotation on enantioseparation
• Effective discrimination of chiral molecules in a cavity
• Chiral resolution by composite Raman pulses
• Efficient and robust chiral resolution by composite pulses
• Enantiodetection of chiral molecules via two-dimensional spectroscopy
• Cyclic three-level-pulse-area theorem for enantioselective state transfer of chiral molecules
• Fast enantioconversion of chiral mixtures based on a four-level double-$\Delta$ model
• Enantiomer superpositions from matter-wave interference of chiral molecules
• Enantio-conversion of chiral mixtures via optical pumping
• Spatial enantioseparation of gaseous chiral molecules
• Time-dependent Fröhlich transformation approach for two-atom entanglement generated by successive passage through a cavity
• Enantio-detection of cyclic three-level chiral molecules in a driven cavity
• Entanglement-Assisted Quantum Chiral Spectroscopy
• Enantiomeric excess determination based on nonreciprocal transition induced spectral line elimination
• Single-shot Non-destructive Quantum Sensing for Gaseous Samples with Hundreds of Chiral Molecules
• Enantiodiscrimination of chiral molecules via quantum correlation function
• Improved laser-distillation method for complete enantio-conversion of chiral mixtures
• Phase-matched locally chiral light for global control of chiral light-matter interaction
• Quantitative study of enantiomer-specific state transfer