Thermalization Rate of Light in Weakly Coupled Molecular Systems

• URL: http://arxiv.org/abs/2512.01040v1
• Date: Sun, 30 Nov 2025 19:22:10 GMT
• Title: Thermalization Rate of Light in Weakly Coupled Molecular Systems
• Authors: Vladislav Yu. Shishkov,
• Abstract summary: Emission and absorption spectra of molecular films are impacted by low-frequency molecular vibrations.<n>I derive the contribution of the low-frequency molecular vibrations to the thermalization rate of light in a weak coupling regime between light and matter.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Emission and absorption spectra of molecular films are impacted by low-frequency molecular vibrations. These vibrations define the linewidths of the absorption and emission spectral peaks, as well as the Stokes shift. In cavities that use a molecular film as an active medium, low-frequency molecular vibrations facilitate the thermalization of light, enabling the formation of Bose-Einstein condensation. In this work, I employ perturbation theory for Lindblad superoperators and derive the contribution of the low-frequency molecular vibrations to the thermalization rate of light in a weak coupling regime between light and matter. The derived thermalization rate applies for any cavity design but depends on the local microscopic properties of low-frequency molecular vibrations. I provide an estimation for the thermalization rate, which requires only knowledge of the macroscopic parameters of the system: light-matter interaction strength, resonant frequencies of the cavity and excitons, number of molecules in the illuminated area, and the linewidth temperature dependence of the 0-0 peak in the emission spectra of standalone molecular film.

Related papers

• Optomechanical disk resonator in the quantum ground state of motion [19.854150537947437]
  We present the first experimental demonstration of an optomechanical disk resonator prepared in the quantum ground state.<n>We quantify the phonon occupancy of the mechanical mode by performing Brillouin sideband spectroscopy.<n>We experimentally investigate the mechanisms ruling laser-induced heating, which limits the lowest measurable phonon occupancy.
  arXiv  Detail & Related papers  (2025-11-19T14:48:07Z)
• Dynamical Acoustic Control of Resonance Fluorescence from a Strongly Driven Two-Level System [29.08420498128584]
  We experimentally study the resonance fluorescence spectrum under a novel driving configuration in which a second gigahertz-frequency field drives the Rabi transition between two atom-photon dressed states.<n>Our results offer new insights into the quantum interactions among single two-level systems, optical fields, and acoustic fields in the strong driving limit.
  arXiv  Detail & Related papers  (2025-09-30T06:36:56Z)
• Selective reflection Casimir-Polder spectroscopy in vapor cells: the influence of the thermal velocity distribution [0.0]
  We extend the theoretical treatment of selective reflection spectra to include the effects of finite Doppler width.<n>This allows us to analyse the regime of very large Casimir-Polder interactions, relevant for Rydberg atom spectroscopy.
  arXiv  Detail & Related papers  (2025-07-08T12:21:18Z)
• Orbital-resolved imaging of coherent femtosecond exciton dynamics in coupled molecules [39.034425621567394]
  Optical excitation and control of excitonic wavepackets in organic molecules is the basis to energy conversion processes.<n>Here, we demonstrate orbital-resolved imaging of optically induced coherent exciton dynamics in single copper napthalocyanine (CuNc) molecules.<n>Results reveal an ultrafast exciton coherence time of 70 fs in a single molecule, which decreases for the triplet excitons in interacting molecules.
  arXiv  Detail & Related papers  (2025-07-01T15:02:08Z)
• Continuous and Reversible Electrical Tuning of Fluorescent Decay Rate via Fano Resonance [2.3592914313389253]
  We demonstrate that the decay rates of a fluorescent molecule can be controlled by electrically shifting a transparency introduced by a Fano resonance.<n>An auxiliary quantum object (QO) located at the hotspot of a plasmonic nanoparticles suppresses plasmonic excitation at its level spacing omega_QO.<n>By shifting omega_QO via an applied voltage, we tune the radiative and nonradiative decay rates of the fluorescent molecule by up to two orders of magnitude.
  arXiv  Detail & Related papers  (2024-12-28T16:20:19Z)
• Metrology of microwave fields based on trap-loss spectroscopy with cold Rydberg atoms [32.73124984242397]
  We demonstrate a new approach for the metrology of microwave fields based on the trap-loss-spectroscopy of cold Rydberg atoms in a magneto-optical trap. Compared to state-of-the-art sensors using room-temperature vapors, cold atoms allow longer interaction times, better isolation from the environment and a reduced Doppler effect.
  arXiv  Detail & Related papers  (2024-04-26T14:30:18Z)
• Limits for coherent optical control of quantum emitters in layered materials [49.596352607801784]
  coherent control of a two-level system is among the most essential challenges in modern quantum optics. We use a mechanically isolated quantum emitter in hexagonal boron nitride to explore the individual mechanisms which affect the coherence of an optical transition under resonant drive. New insights on the underlying physical decoherence mechanisms reveals a limit in temperature until which coherent driving of the system is possible.
  arXiv  Detail & Related papers  (2023-12-18T10:37:06Z)
• Thermalization rate of polaritons in strongly-coupled molecular systems [0.0]
  Polariton thermalization is a key process in achieving light-matter Bose--Einstein condensation. We develop a microscopic theory addressing polariton thermalization in strongly-coupled molecular systems.
  arXiv  Detail & Related papers  (2023-11-16T13:46:15Z)
• Quantum control of ro-vibrational dynamics and application to light-induced molecular chirality [39.58317527488534]
  Achiral molecules can be made temporarily chiral by excitation with electric fields. We go beyond the assumption of molecular orientations to remain fixed during the excitation process.
  arXiv  Detail & Related papers  (2023-10-17T20:33:25Z)
• A high-flux source system for matter-wave interferometry exploiting tunable interactions [33.92525320044496]
  Atom interferometers allow determining inertial effects to high accuracy. Here we report on a high-flux source of ultra-cold atoms with free expansion rates near the Heisenberg limit directly upon release from the trap.
  arXiv  Detail & Related papers  (2023-07-13T14:10:53Z)
• Floquet superradiance lattices in thermal atoms [18.683359916754775]
  Floquet modulation has been widely used in optical lattices for coherent control of quantum gases. Here we report that the thermal motion, instead of being a noise source, provides a new control knob in Floquet-modulated superradiance lattices.
  arXiv  Detail & Related papers  (2022-12-09T15:04:18Z)
• Continuum-electron interferometry for enhancement of photoelectron circular dichroism and measurement of bound, free, and mixed contributions to chiral response [39.58317527488534]
  We develop photoelectron interferometry based on laser-assisted extreme ultraviolet ionization for flexible and robust control of photoelectron circular dichroism in randomly oriented chiral molecules. A comb of XUV photons ionizes a sample of chiral molecules in the presence of a time-delayed infrared or visible laser pulse promoting interferences between components of the XUV-ionized photoelectron wave packet.
  arXiv  Detail & Related papers  (2021-04-15T15:20:57Z)
• Disordered ensembles of strongly coupled single-molecule plasmonic picocavities as nonlinear optical metamaterials [0.0]
  We propose to use molecular picocavity ensembles as macroscopic coherent nonlinear optical devices enabled by nanoscale strong coupling. For a realistic molecular disorder model, we demonstrate that cross-phase modulation of optical fields as weak as 10 kW/cm$2$ is feasible using dilute ensembles of molecular picocavities at room temperature.
  arXiv  Detail & Related papers  (2021-04-02T02:12:36Z)
• Phonon-induced optical dephasing in single organic molecules [0.0]
  We present a joint experiment--theory analysis of the temperature-dependent emission spectra, zero-phonon linewidth, and second-order correlation function of light emitted from a single molecule. Our results constitute an essential characterisation of the photon coherence of these promising molecules, paving the way towards their use in future quantum information applications.
  arXiv  Detail & Related papers  (2020-01-13T16:01:01Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.