Entanglement-Assisted Quantum Chiral Spectroscopy

Abstract

The most important problem of spectroscopic chiral analysis is the inherently weak chiral signals are easily overwhelmed by the environment noises. Enormous efforts had been spent to overcome this problem by enhancing the symmetry break in the light-molecule interactions or reducing the environment noises. Here, we propose an alternative way to solve this problem by using frequency-entangled photons as probe signals and detecting them in coincidence, i.e., using quantum chiral spectroscopy. For this purpose, we develop the theory of entanglement-assisted quantum chiral spectroscopy. Our results show that the signals of left- and right-handed molecules in the quantum spectrum are always distinguishable by suitably configuring the entangled probe photons. In construct, the classical spectrum of the two enantiomers become indistinguishable when the symmetry break in the interactions is overwhelmed by the environment noises. This offers our quantum chiral spectroscopy a great advantage over all classical chiral spectroscopy. Our work opens up an exciting area that exploring profound advantages of quantum spectroscopy in chiral analysis.

References in corpus (22)

• Infrared Spectroscopy with Visible Light
• The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
• Nonlinear optical signals and spectroscopy with quantum light
• Nonlinear interactions with an ultrahigh flux of broadband entangled photons
• Direct Laser Cooling of a Symmetric Top Molecule
• Two-Step Enantio-selective Optical Switch
• Enantiomer-Specific State Transfer of Chiral Molecules
• Generalized Stern-Gerlach Effect for Chiral Molecules
• Optically-Induced Highly-Efficient Detection and Separation of Chiral Molecules through Shortcuts to Adiabaticity
• Molecular Asymmetry and Optical Cycling: Laser Cooling Asymmetric Top Molecules
• Principles of enantio-selective excitation in three-wave mixing spectroscopy of chiral molecules
• Two-photon Quantum Interference and Entanglement at 2 μm
• Vector exceptional points with strong superchiral fields
• Entanglement-Assisted Absorption Spectroscopy
• Real single-loop cyclic three-level configuration of chiral molecules
• Quantum spectroscopy of plasmonic nanostructures
• Determination of enantiomeric excess with chirality-dependent AC Stark effects in cyclic three-level models
• Effective two-level models for highly efficient inner-state enantio-separation based on cyclic three-level systems of chiral molecules
• Enhanced chiral discriminatory van der Waals interactions mediated by chiral surfaces
• Effective discrimination of chiral molecules in a cavity
• Fast enantioconversion of chiral mixtures based on a four-level double-$\Delta$ model
• Enantio-conversion of chiral mixtures via optical pumping

Cited by in corpus (11)

• Enantiodetection of chiral molecules via two-dimensional spectroscopy
• Enantio-detection of cyclic three-level chiral molecules in a driven cavity
• Single-shot Non-destructive Quantum Sensing for Gaseous Samples with Hundreds of Chiral Molecules
• Enantiodiscrimination of chiral molecules via quantum correlation function
• Enantio-specific state transfer of chiral molecules through enantio-selective shortcut-to-adiabaticity paths
• Performing quantum entangled biphoton spectroscopy using classical light pulses
• Enantiomer detection via Quantum Otto cycle
• Phase-matched locally chiral light for global control of chiral light-matter interaction
• Enantiomer-Specific Pumping of Chiral Molecules
• Optical-pumping enantio-conversion of chiral mixtures in presence of tunneling between chiral states
• Enantiospecific Two-Photon Electric-Dipole Selection Rule of Chiral Molecules