Quantum Spectroscopy
My research concerns the role quantum states of light, like entangled pairs or squeezed states of light, could play in future quantum spectroscopic applictaions. In particular, I simulate situations as sketched in the left panel above, where entangled photons excite a complex quantum system like a photosynthetic aggregate. I want to find out what information we can gain on the ultrafast relaxation dynamics in such a system, which we could not gain with conventional spectroscopic tools.
I have written or co-authored several review articles and tutorials on this topic:
- F. Schlawin, Quantum-enhanced nonlinear spectroscopy, Springer, New York, USA, Springer (2016).
- K. E. Dorfman, F. Schlawin, and S. Mukamel, Nonlinear optical signals and spectroscopy with quantum light, Reviews of Modern Physics 88, 045008 (2016).
- F. Schlawin, Entangled photon spectroscopy, Journal of Physics B 50, 203001 (2017).
- S. Mukamel et al., Roadmap on Quantum Light Spectroscopy, Journal of Physics B 53, 072002 (2020).
More recently, I have become interested in the information content of light emitted by a complex quantum system, as illustrated in the right panel of the figure above. It turns out that the photon statistics of the emitted light allows to extract vital information on the dynamics.
- C. Sànchez Muñoz and F. Schlawin, Photon correlation spectroscopy as a witness of quantum coherence, Physical Review Letters 124, 203601 (2020).