18 citations · 59 across the 8 of their papers we have counts for
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quant-ph2026
Normal-ordered perturbative expansion for matter systems interacting with continuous-mode quantum photon fields
Liwen Ko, Robert L. Cook, K. Birgitta Whaley
We develop a normal-ordered perturbative expansion method to compute the reduced dynamics of a matter system interacting with a general continuous-mode photon field state. In this…
quant-ph2026
Input-output formulation of quantum light spectroscopy
Liwen Ko, Robert L. Cook, K. Birgitta Whaley
We develop an input-output formulation of quantum light spectroscopy (QLS) by combining the input-output theory, commonly used in quantum optics, with the perturbative expansion me…
physics.chem-ph2026
First-Principles Nonadiabatic Dynamics via the Multi-Orbital Anderson-Newns Model
Liwen Ko, Joonho Lee
We develop a first-principles theory for nonadiabatic surface dynamics, providing a fit-free connection between density functional theory (DFT) calculations and the effective multi…