Coherence Resonance Phenomena in an Atom-Dimer Two Mode BECs

Avinaba Mukherjee

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arXiv · 2608.27947

Coherence Resonance Phenomena in an Atom-Dimer Two Mode BECs

Avinaba Mukherjee

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Abstract

We investigate the non-equilibrium dynamics of atomic-molecular Bose-Einstein condensates coupled via a Feshbach resonance, with Gaussian white noise acting on both the coupling strength and the detuning. Using the bosonic Josephson-junction and Bloch-sphere formalisms, we examine how coherence (coupling) noise and imbalance (detuning) noise modify the coherence-resonance point as functions of the initial polarization and the Feshbach detuning. Noise plays a more coherent role when its characteristic timescale matches the intrinsic timescales of the dynamics, leading to extrema in the time-averaged purity and the Husimi-Q distribution.

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Avinaba Mukherjee. 2026-08-28. Coherence Resonance Phenomena in an Atom-Dimer Two Mode BECs. https://arxiv.org/abs/2608.27947

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