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Photon statistics for single-molecule nonlinear spectroscopy.

F Shikerman1, E Barkai

  • 1Department of Physics, Bar Ilan University, Ramat-Gan 52900, Israel.

Physical Review Letters
|February 1, 2008
PubMed
Summary
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We developed a new theory for single-molecule nonlinear spectroscopy, revealing insights into ultrafast molecular dynamics through photon statistics and dipole correlation functions.

Area of Science:

  • Physical Chemistry
  • Spectroscopy
  • Theoretical Chemistry

Background:

  • Single-molecule spectroscopy offers unique insights into dynamics.
  • Understanding molecular dynamics requires advanced theoretical frameworks.

Purpose of the Study:

  • To develop a theory for nonlinear spectroscopy of single molecules.
  • To analyze photon statistics and dynamics under stochastic conditions.

Main Methods:

  • Developed theoretical framework for nonlinear spectroscopy.
  • Analyzed photon counting statistics and dipole correlation functions.
  • Solved the problem for the Kubo-Anderson process.

Main Results:

  • Derived general expressions for photon statistics.

Related Experiment Videos

  • Found exact solutions for the Kubo-Anderson process.
  • Identified rich behaviors in selective, semiclassical, and fast modulation limits.

    • Conclusions:

    • Photon statistics reveal molecular dipole correlation functions for impulsive pulses.
    • External field design provides unique insights into ultrafast molecular dynamics.
    • Single-molecule spectroscopy offers different insights compared to ensemble measurements.