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PreprintarXiv licencearXiv

Dephasing-driven suppression of superradiance and metastable dynamics in the anisotropic open Rabi model

  • Jivyanshu Priya
  • Pragna Das
  • Auditya Sharma
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Abstract

Finite-component light-matter systems realize dissipative phase transitions in a single controllable atom-cavity setup, but how atomic dephasing - ubiquitous in real cavity- and circuit-QED devices - affects this criticality remains unknown. We study the anisotropic open Rabi model under cavity decay, spontaneous emission, and atomic dephasing together. We show that when spontaneous emission stabilizes a long-lived metastable superradiant phase, atomic dephasing actively competes with it - eroding its coherence and shortening the lifetime. This direct competition reveals that a dissipation channel's microscopic character, not its strength, controls its nonequilibrium criticality - a distinction directly tunable via independent spontaneous-emission and dephasing rates in circuit-QED and trapped-ion platforms.

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Cite

BibTeXRIS
BibTeX
@misc{priya2026dephasingdriven,
  title = {{Dephasing-driven suppression of superradiance and metastable dynamics in the anisotropic open Rabi model}},
  author = {Jivyanshu Priya and Pragna Das and Auditya Sharma},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.12066},
  eprint = {2609.12066},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.12066},
}
RIS
TY  - UNPB
TI  - Dephasing-driven suppression of superradiance and metastable dynamics in the anisotropic open Rabi model
AU  - Jivyanshu Priya
AU  - Pragna Das
AU  - Auditya Sharma
PY  - 2026
DA  - 2026/09/29
PB  - arXiv
DO  - 10.48550/arxiv.2609.12066
UR  - https://arxiv.org/abs/2609.12066
AB  - Finite-component light-matter systems realize dissipative phase transitions in a single controllable atom-cavity setup, but how atomic dephasing - ubiquitous in real cavity- and circuit-QED devices - affects this criticality remains unknown. We study the anisotropic open Rabi model under cavity decay, spontaneous emission, and atomic dephasing together. We show that when spontaneous emission stabilizes a long-lived metastable superradiant phase, atomic dephasing actively competes with it - eroding its coherence and shortening the lifetime. This direct competition reveals that a dissipation channel's microscopic character, not its strength, controls its nonequilibrium criticality - a distinction directly tunable via independent spontaneous-emission and dephasing rates in circuit-QED and trapped-ion platforms.
ER  -