Weakly Driven and Finite Detuning Boundary Time Crystals Enabled by Low-Dissipation Dynamical Channels

• URL: http://arxiv.org/abs/2609.03491v1
• Date: Thu, 03 Sep 2026 07:49:18 GMT
• Title: Weakly Driven and Finite Detuning Boundary Time Crystals Enabled by Low-Dissipation Dynamical Channels
• Abstract summary: boundary time crystals (BTCs) are persistent oscillations sustained by coherent driving and collective dissipation.<n> Conventional BTCs require strong driving and exact atom-drive resonance.<n>We show that shared dissipation organizes dissipation-free and low-dissipation modes into dynamically accessible low-dissipation channels.
• Score: 11.800038220533137
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Spontaneous breaking of continuous time-translation symmetry in driven-dissipative systems gives rise to boundary time crystals (BTCs), characterized by persistent oscillations sustained by coherent driving and collective dissipation. Conventional BTCs, however, typically require strong driving and exact atom-drive resonance, imposing stringent constraints on their realization. Here we consider two atomic ensembles coupled to a common Markovian reservoir and show that shared dissipation organizes dissipation-free and low-dissipation modes into dynamically accessible low-dissipation channels, enabling BTCs under weak driving and finite detuning. Finite detuning further selects a unique stable limit cycle from an initial-state-dependent family of oscillatory trajectories. Our results establish low-dissipation dynamical channels as a route to robust BTCs under relaxed driving and resonance conditions.

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