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In this work, we combine the density functional tight-binding (DFTB) approach with a light-matter Hamiltonian beyond the long-wavelength approximation to propagate the dynamics of vibrational polaritons formed by coupling molecular…

Chemical Physics · Physics 2026-04-13 Sachith Wickramasinghe , Amirhosein Amini , Arkajit Mandal

Molecular polaritons, hybrid light-matter states resulting from strong cavity coupling of optical transitions, may provide a new route to guide chemical reactions. However, demonstrations of cavity-modified reactivity in clean benchmark…

Chemical Physics · Physics 2024-08-20 Liying Chen , Ashley P. Fidler , Alexander M. McKillop , Marissa L. Weichman

In this article, we show that the collective light-matter strong coupling regime, where $N$ molecular emitters couple to the photon mode of an optical cavity, can be mapped to a quantum impurity model where the photon is the impurity that…

Quantum Physics · Physics 2023-10-25 Joel Yuen-Zhou , Arghadip Koner

We theoretically demonstrate that chemical reaction rate constant can be significantly suppressed by coupling molecular vibrations with an optical cavity, exhibiting both the collective coupling effect and the cavity-frequency modification…

Chemical Physics · Physics 2022-01-26 Arkajit Mandal , Xinyang Li , Pengfei Huo

In this thesis, we use classical, semi-classical and quantum-mechanical methods to simulate chemical reaction dynamics inside of an optical cavity. Within such a cavity, by selectively coupling vibrational modes of the reactants to the…

Chemical Physics · Physics 2024-02-08 Andrew C. Hunt

Strong coupling between molecular excitations and quantized electromagnetic fields in optical cavities provides a powerful means to control the physical and chemical properties of molecular systems. Here, we study electron transfer (ET)…

Chemical Physics · Physics 2026-03-02 Takumi Hidaka , Tomohiro Fukushima , Nguyen Thanh Phuc

For a small fraction of hot CO2 molecules immersed in a liquid-phase CO2 thermal bath, classical cavity molecular dynamics simulations show that forming collective vibrational strong coupling (VSC) between the C=O asymmetric stretch of CO2…

Chemical Physics · Physics 2021-05-11 Tao E. Li , Abraham Nitzan , Joseph E. Subotnik

In this work we investigate anharmonic vibrational polaritons formed due to strong light-matter interactions in an optical cavity between radiation modes and anharmonic vibrations beyond the long-wavelength limit. We introduce a…

Quantum Physics · Physics 2024-09-13 Dipti Jasrasaria , Arkajit Mandal , David R. Reichman , Timothy C. Berkelbach

Resonant coupling of a vibration to a cavity mode has been reported to dramatically modify spontaneous Raman scattering, but subsequent studies have produced conflicting results. In this Letter, we develop a microscopic quantum framework…

Mesoscale and Nanoscale Physics · Physics 2025-11-04 Maxime Dherbécourt , Joël Bellessa , Clémentine Symonds , Guillaume Weick , David Hagenmüller

We derive the transition rates, dephasing rates, and Lamb shifts for a system consisting of many molecules collectively coupled to a resonant cavity mode. Using a variational polaron master equation, we show that strong vibrational…

Quantum Physics · Physics 2024-07-24 Dominic M Rouse , Erik M Gauger , Brendon W Lovett

We show how to simulate a model of many molecules with both strong coupling to many vibrational modes and collective coupling to a single photon mode. We do this by combining process tensor matrix product operator methods with a mean-field…

Quantum Gases · Physics 2022-10-24 Piper Fowler-Wright , Brendon W. Lovett , Jonathan Keeling

We present a microscopic theory for nonlinear optical spectroscopy of N molecules in an optical cavity. A quantum Langevin analytical expression is derived for the time- and frequency-resolved signals accounting for arbitrary numbers of…

Quantum Physics · Physics 2023-03-29 Zhedong Zhang , Xiaoyu Nie , Dangyuan Lei , Shaul Mukame

This study investigates the dynamic behavior of polaritons in an optical cavity containing one million molecules, emphasizing the influence of molecular rotation and level disorder on the coupling between molecules and photons. Through…

Optics · Physics 2024-02-22 Wei Liu , Jingqi Chen , Wenjie Dou

Developing theoretical frameworks for vibrational strong coupling (VSC) beyond the single-mode approximation is crucial for a comprehensive understanding of experiments with planar Fabry-P\'erot cavities. Herein, a generalized cavity…

Chemical Physics · Physics 2024-06-18 Tao E. Li

The strong coupling of an IR-active molecular transition with an optical mode of the cavity results in vibrational polaritons, which opens a new way to control chemical reactivity via confined electromagnetic fields of the cavity. In this…

Vibrational polaritons, hybrid light-matter states formed between molecular vibrations and infrared (IR) cavity modes, provide a novel approach for modifying chemical reaction pathways and energy transfer processes. For vibrational…

Chemical Physics · Physics 2025-05-16 Xinwei Ji , Tao E. Li

This review outlines several linear optical effects featured by molecular polaritons arising in the collective strong light-matter coupling regime. Under weak laser irradiation and when the single-molecule light-matter coupling can be…

In this paper we develop quantum dynamical methods capable of treating the dynamics of chemically reacting systems in an optical cavity in the vibrationally strong-coupling (VSC) limit at finite temperatures and in the presence of a…

Quantum Physics · Physics 2025-02-11 Lachlan P. Lindoy , Arkajit Mandal , David R. Reichman

We demonstrate that collective vibrational strong coupling of molecules in thermal equilibrium can give rise to significant local electronic polarizations in the thermodynamic limit. We do so by first showing that the full non-relativistic…

Intramolecular energy transfer driven by near-field effects plays an important role in applications ranging from biophysics and chemistry to nano-optics and quantum communications. Advances in strong light-matter coupling in molecular…

Mesoscale and Nanoscale Physics · Physics 2025-07-14 Kristin B. Arnardottir , Piper Fowler-Wright , Christos Tserkezis , Brendon W. Lovett , Jonathan Keeling