Noise-enhanced ballistic expansion of polariton wave-packets in a multimode cavity
- 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
- 2ITAMP, Center for Astrophysics, Harvard & Smithsonian, Cambridge, MA, USA
- 3Beijing Computational Science Research Center, Beijing, China
Abstract
Advances in optical measurements enable precise tracking of cavity polariton wave-packets across broad spatial and temporal ranges, but how dephasing reshapes their real-space dynamics over multiple time scales remains unclear. Here we show, using a stochastic multimode Tavis-Cummings model, that dephasing noise leads to a robust hierarchy of dynamical regimes comprising Rabi oscillation damping, center-of-mass slowdown, population relaxation, and ballistic-to-diffusive crossover, in the order of increasing time scales. We further predict that dephasing can enhance ballistic spreading and sustain it far beyond the microscopic dephasing time by two orders of magnitude. These predictions agree with recent microscopy measurements and provide experimentally testable guidance for engineering energy transport in polaritonic platforms. Advances in optical measurements have improved our ability to track cavity polariton wave-packets, yet the impact of dephasing on their dynamics over time remains poorly understood. Here, the authors employ a stochastic multimode Tavis-Cummings model to reveal that dephasing noise induces a hierarchy of dynamical regimes, enhancing ballistic spreading and extending its duration significantly. These findings align with recent microscopy measurements and offer valuable insights for optimizing energy transport in polaritonic systems.
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BibTeX
@article{tutunnikov2026noiseenhanced,
title = {{Noise-enhanced ballistic expansion of polariton wave-packets in a multimode cavity}},
author = {Ilia Tutunnikov and Md Qutubuddin and H. R. Sadeghpour and Jianshu Cao},
journal = {Communications Physics},
year = {2026},
month = jun,
doi = {10.1038/s42005-026-02708-2},
url = {https://doi.org/10.1038/s42005-026-02708-2},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Noise-enhanced ballistic expansion of polariton wave-packets in a multimode cavity
AU - Ilia Tutunnikov
AU - Md Qutubuddin
AU - H. R. Sadeghpour
AU - Jianshu Cao
PY - 2026
DA - 2026/06/29
JO - Communications Physics
DO - 10.1038/s42005-026-02708-2
UR - https://doi.org/10.1038/s42005-026-02708-2
AB - Advances in optical measurements enable precise tracking of cavity polariton wave-packets across broad spatial and temporal ranges, but how dephasing reshapes their real-space dynamics over multiple time scales remains unclear. Here we show, using a stochastic multimode Tavis-Cummings model, that dephasing noise leads to a robust hierarchy of dynamical regimes comprising Rabi oscillation damping, center-of-mass slowdown, population relaxation, and ballistic-to-diffusive crossover, in the order of increasing time scales. We further predict that dephasing can enhance ballistic spreading and sustain it far beyond the microscopic dephasing time by two orders of magnitude. These predictions agree with recent microscopy measurements and provide experimentally testable guidance for engineering energy transport in polaritonic platforms. Advances in optical measurements have improved our ability to track cavity polariton wave-packets, yet the impact of dephasing on their dynamics over time remains poorly understood. Here, the authors employ a stochastic multimode Tavis-Cummings model to reveal that dephasing noise induces a hierarchy of dynamical regimes, enhancing ballistic spreading and extending its duration significantly. These findings align with recent microscopy measurements and offer valuable insights for optimizing energy transport in polaritonic systems.
SN - 2399-3650
ER -