Future Paths in Cryogenic Single-Molecule Fluorescence Spectroscopy

Area of Science:

• Physical Chemistry
• Quantum Optics
• Spectroscopy

Background:

• Cryogenic single-molecule fluorescence spectroscopy has advanced understanding of molecular photophysics and interactions over 30 years.
• Zero-phonon lines serve as sensitive probes for molecular dynamics and external perturbations.

Purpose of the Study:

• To review advances in cryogenic optical microscopy.
• To explore future perspectives in molecular-scale sensing and quantum information applications.

Main Methods:

• Utilizing cryogenic single-molecule fluorescence spectroscopy.
• Employing ultranarrow lifetime-limited zero-phonon lines as sensors.
• Investigating single aromatic hydrocarbon molecules for nanoscale probing.

Main Results:

• Demonstrated average-free understanding of molecular photophysics and interactions.
• Identified zero-phonon lines as sensitive indicators of local molecular environments.
• Highlighted potential of aromatic hydrocarbons in quantum photonics.

Conclusions:

• Cryogenic spectroscopy provides unparalleled molecular-scale insights.
• Aromatic hydrocarbon molecules are promising for integrated quantum photonics.
• Future developments will likely focus on enhanced nanoscale sensing and quantum information technologies.