Coherent Control with Modified Vacuum Fields

Molecular polaritons as quantum impurity models

14 Aug 2024, 15:00

30m

Albano Building 3

Invited Talk Wednesday Afternoon

Speaker

Joel Yuen-Zhou (UC San Diego)

Description

In the collective strong coupling regime where N molecules couple to an optical cavity mode, molecular polaritons may be regarded as quantum impurity models, where the impurity is a photon and the complex anharmonic molecular degrees of freedom serve as a bath. If this bath is large enough (N>>1), as in the case of most molecular polariton experiments, the quantum dynamics of such a system becomes very simple to compute [1,2], as demonstrated in our recent method, Collective Dynamics using Truncated Equations (CUT-E) [3,4]. The conceptual implications of this method are also discussed in light of recent experiments in polariton chemistry. Intriguing consequences of finite N effects are discussed.

1. J. Yuen-Zhou and A. Koner, Linear response of molecular polaritons, J. Chem. Phys. 160, 154107 (2024).
2. K. Schwennicke and J. Yuen-Zhou, Extracting accurate light–matter couplings from disordered polaritons, Nanophotonics 0049 (2024).
3. J. B. Pérez-Sánchez, A. Koner, N. P Stern, and J. Yuen-Zhou, Simulating molecular polaritons in the collective regime using few-molecule models, Proc. Nat. Acad. Sci. 120(15) e2219223120 (2023).
4. J. Pérez-Sánchez, F. Mellini, N. C. Giebink, and J. Yuen-Zhou, Collective polaritonic effects on chemical dynamics suppressed by disorder, Phys. Rev. Res. 1, 013222 (2024).