14 citations · 15 across the 12 of their papers we have counts for
13 papers
Cooperative Suppression of Two-Particle Excitation by Kerr Nonlinearity and Cavity Loss ion a Driven Holstein-Tavis-Cumming System
Zhiyao Qu, Kewei Sun, Youhao Chang +3
We apply the numerically accurate multiple Davydov Ansatz (multi-) method to investigate the nonequilibrium dynamics of an open molecular cavity system using an extended d…
An Ab initio Framework for Simulating Ultrafast Nonlinear Cavity Quantum Electrodynamics Spectra
Luis Vasquez, Kewei Sun, Haibo Ma +1
In this letter we introduce a theoretical framework for the simulation of ultrafast transient absorption pump-probe spectra of molecular polaritons. We derive and implement the cav…
Environmental Control Extends Beyond Quantum Dephasing in Exciton Energy Transfer
Junhua Zhou, Tianrui Chen, Dehao Yuan +8
Excitation-energy transfer underpins the conversion of light into usable energy in photosynthetic organisms and serves as a paradigm for evolutionary optimized transport in open qu…
Open Quantum Systems Driven by Chirped Pulses: Quantized versus Semiclassical Fields and the Validity of the Rotating-Wave Approximation
Justin Zhengjie Tan, Frank Großmann, Yiying Yan +2
Population transfer via chirped rapid adiabatic passage is studied using open quantum and semiclassical models, with and without the rotating-wave approximation. A time-dependent v…
WaveMixings.jl: a Julia package for performing on-the-fly time-resolved nonlinear electronic spectra from quasi-classical trajectories
Luis Vasquez, Sebastian Pios, Lipeng Chen +3
We present an efficient numerical implementation of the quasi-classical doorway-window approximation, specifically designed for on-the-fly simulations of time-resolved nonlinear sp…
Hamiltonian non-Hermicity: accurate dynamics with the multiple Davydov D Ansätze
L. Zhang, K. Shen, Y. Yan +3
We examine the applicability of the numerically accurate method of time dependent variation with multiple Davydov Ansatze (mDA) to non-Hermitian systems. Three systems of interest…
Tracking the Electron Density Changes in Excited States -- A Computational Study on Pyrazine
Sebastian V. Pios, Jiaji Zhang, Maxim F. Gelin +2
The development of X-ray free-electron lasers (XFELs) has enabled ultrafast X-ray diffraction (XRD) experiments, which are capable of resolving electronic/vibrational transitions a…
On-the-Fly Simulation of Two-Dimensional Fluorescence-Excitation Spectra
Sebastian V. Pios, Maxim F. Gelin, Luis Vasquez +2
Two-dimensional (2D) fluorescence-excitation (2D-FLEX) spectroscopy is a recently proposed nonlinear femtosecond technique for the detection of photoinduced dynamics. The method re…
Optical-cavity manipulation strategies of singlet fission systems mediated by conical intersections: insights from fully quantum simulations
Kewei Sun, Maxim Gelin, Kaijun Shen +1
We offer a theoretical perspective on simulation and engineering of polaritonic conical-intersection-driven singlet-fission (SF) materials. We begin by examining fundamental models…
Accelerating molecular vibrational spectra simulations with a physically informed deep learning model
Yuzhuo Chen, Sebastian V. Pios, Maxim F. Gelin +1
In recent years, machine learning (ML) surrogate models have emerged as an indispensable tool to accelerate simulations of physical and chemical processes. However, there is still…
Finite temperature dynamics in a polarized sub-Ohmic heat bath: a hierarchical equations of motion-tensor train study
Hideaki Takahashi, Raffaele Borrelli, Maxim F. Gelin +1
Dynamics of the sub-Ohmic spin-boson model under polarized initial conditions at finite temperature is investigated by employing both analytical tools and the numerically accurate…
Finite-Temperature Hole-Magnon Dynamics in an Antiferromagnet
Kaijun Shen, Kewei Sun, Maxim F. Gelin +1
Employing the numerically accurate multiple Davydov Ansatz in combination with the thermo-field dynamics approach, we delve into interplay of the finite-temperature dynamics of hol…
AI-enhanced on-the-fly simulation of nonlinear time-resolved spectra
Sebastian V. Pios, Maxim F. Gelin, Arif Ullah +2
Time-resolved spectroscopy is an important tool for unraveling the minute details of structural changes of molecules of biological and technological significance. The nonlinear fem…