Photon Correlation Spectroscopy and Applications

Contains report on one research project.National Science Foundation (Grant PCM81-11534

Photon Correlation Spectroscopy and Applications

Contains a report on the research program.National Science Foundation (Grant PCM78-15844

Photon Correlation Spectroscopy and Applications

Contains report on research project.National Science Foundation (Grant PCM81-11534

Photon Correlation Spectroscopy and Applications

Contains report on one research project.National Science Foundation (Grant PCM81-11534

Photon correlation spectroscopy as a witness for quantum coherence

The development of spectroscopic techniques able to detect and verify quantum coherence is a goal of increasing importance given the rapid progress of new quantum technologies, the advances in the field of quantum thermodynamics, and the emergence of new questions in chemistry and biology regarding the possible relevance of quantum coherence in biochemical processes. Ideally, these tools should be able to detect and verify the presence of quantum coherence in both the transient dynamics and the steady state of driven-dissipative systems, such as light-harvesting complexes driven by thermal photons in natural conditions. This requirement poses a challenge for standard laser spectroscopy methods. Here, we propose photon correlation measurements as a new tool to analyse quantum dynamics in molecular aggregates in driven-dissipative situations. We show that the photon correlation statistics on the light emitted by a molecular dimer model can signal the presence of coherent dynamics. Deviations from the counting statistics of independent emitters constitute a direct fingerprint of quantum coherence in the steady state. Furthermore, the analysis of frequency resolved photon correlations can signal the presence of coherent dynamics even in the absence of steady state coherence, providing direct spectroscopic access to the much sought-after site energies in molecular aggregates

Photon Correlation Spectroscopy and Applications

Contains reports on two research projects.National Science Foundation (Grant DMR-84- 18718)Wan-Yuan Company, Beijing, Peoples Republic of China Contrac

Photon Correlation Spectroscopy and Applications

Contains report on research program.National Science Foundation (Grant PCM78-15844

Photon Correlation Spectroscopy and Applications

Contains reports on three research projects.National Science Foundation (Grant CDR 85-00003)S.C. Johnson and Son, Inc. Research FundNational Science Foundation (Grant DMR 84-18718)National Science Foundation (Grant INT 83-13354)Exxon Research FundWan Yuan Industry, Inc., People's Republic of Chin