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  • Letter
  • Open Access

Rabi oscillations of strongly driven Bose polarons

Zeyu Liu1 and Pengfei Zhang1,2,*

  • 1State Key Laboratory of Surface Physics & Department of Physics, Fudan University, Shanghai 200438, China
  • 2Hefei National Laboratory, Hefei 230088, China

  • *Contact author: PengfeiZhang.physics@gmail.com
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Phys. Rev. Research 8, L012010 – Published 12 January, 2026

DOI: https://doi.org/10.1103/s13m-54d7

Abstract

Understanding the dynamical behavior of quasiparticles is essential for uncovering quantum many-body phenomena. Among these phenomena, the polaron in ultracold atomic gases has attracted considerable interest due to its precise controllability. By engineering the underlying Hamiltonian, polarons serve as a versatile platform for studying both equilibrium properties and nonequilibrium dynamics. In this work, we investigate the quantum dynamics of strongly driven Bose polarons, where minority atoms are described as mobile impurities with spin-1/2, and majority atoms are bosons. The spin-↑ impurity interacts with majority atoms through a tunable scattering length a, while the spin-↓ impurity remains noninteracting. After turning on the Rabi coupling, we calculate the evolution of the total magnetization using a trial wavefunction. We identify the exhibition of anomalous Rabi oscillation and steady-state magnetization for a>0, due to the interplay between attractive and repulsive polarons. Our results provide a concrete example that illustrates how Rabi oscillations are dressed by system-environment coupling.

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Phys. Rev. Research 8, L012010– Published 12 January, 2026
  • Received 1 May 2025
  • Accepted 24 December 2025
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