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Enantiosensitive steering of free-induction decay.
Margarita Khokhlova1,2, Emilio Pisanty1,2, Serguei Patchkovskii1
1Max Born Institute, 12489 Berlin, Germany.
Science Advances
|June 15, 2022
Summary
Researchers developed a new all-optical method for chiral discrimination using enantiosensitive free-induction decay. This technique harnesses Rydberg excitations and a tricolor chiral field for sensitive detection of molecular enantiomers.
Area of Science:
- Ultrafast Physics
- Chiral Chemistry
- Quantum Optics
Background:
- Chiral discrimination is crucial in various scientific fields.
- Existing ultrafast physics methods for chiral discrimination often require strong fields.
- Rydberg excitations are common in strong-field and few-photon processes.
Purpose of the Study:
- To introduce a novel, sensitive, all-optical technique for chiral discrimination.
- To harness Rydberg excitations for enantioselective detection.
- To develop a method that avoids strong fields and utilizes structured light.
Main Methods:
- Theoretical demonstration of enantiosensitive free-induction decay.
- Utilizing a spatially and temporally structured tricolor chiral field at gentle intensity.
- Exploiting perturbative interactions between the chiral field and excited molecules.
Main Results:
- Excited chiral molecules accumulate an enantiosensitive phase.
- A spatial phase gradient is generated, steering free-induction decay.
- Opposite enantiomers exhibit distinct spatial steering directions.
Conclusions:
- A general, highly sensitive, all-optical enantiosensitive detection technique is introduced.
- The method leverages Rydberg excitations and structured light.
- This approach offers a low-intensity alternative for chiral molecule detection.
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