Robust Control of Enantioselective State Transfer in Chiral Molecules

Area of Science:

• Quantum Control
• Molecular Chirality
• Spectroscopy

Background:

• Enantioselective excitation is crucial for distinguishing chiral molecules.
• Existing methods often lack robustness against experimental imperfections.

Purpose of the Study:

• To develop a robust coherent control strategy for enantioselective excitation.
• To enhance resilience against pulse-area errors in chiral molecule manipulation.

Main Methods:

• Utilized a cyclic three-state rotational manifold.
• Employed three linearly polarized microwave fields for excitation.
• Introduced a composite pulse to minimize pulse-area errors.

Main Results:

• Achieved analytical determination of amplitude and phase requirements for enantioselective state transfer.
• Demonstrated reliable steering of enantiomers into distinct target states using tailored microwave fields.
• Showcased significant improvement in robustness, maintaining high enantioselectivity with pulse-area deviations up to ±30%.

Conclusions:

• The proposed method offers high-fidelity enantioselective control for chiral molecules.
• The composite pulse strategy significantly enhances robustness against practical uncertainties.
• This approach holds promise for advanced applications in chiral chemistry and spectroscopy.