Abstract

We Investigate The Crossover Of The Impurity-Induced Dynamics, In Trapped One-Dimensional Bose Polarons Subject To Radio Frequency (RF) Pulses Of Varying Intensity, From An Adiabatic To A Diabatic Regime. Utilizing Adiabatic Pulses For Either Weak Repulsive Or Attractive Impurity-Medium Interactions, A Multitude Of Polaronic Excitations Or Mode-Couplings Of The Impurity-Bath Interaction With The Collective Breathing Motion Of The Bosonic Medium Are Spectrally Resolved. We Find That For Strongly Repulsive Impurity-Bath Interactions, A Temporal Orthogonality Catastrophe Manifests In Resonances In The Excitation Spectra Where Impurity Coherence Vanishes. When Two Impurities Are Introduced, Impurity-Impurity Correlations, For Either Attractive Or Strong Repulsive Couplings, Induce A Spectral Shift Of The Resonances With Respect To The Single Impurity. For A Heavy Impurity, The Polaronic Peak Is Accompanied By A Series Of Equidistant Side-Band Resonances, Related To Interference Of The Impurity Spin Dynamics And The Sound Waves Of The Bath. In All Cases, We Enter The Diabatic Transfer Regime For An Increasing Bare Rabi Frequency Of The RF Field With A Lorentzian Spectral Shape Featuring A Single Polaronic Resonance. The Findings In This Work On The Effects Of External Trap, RF Pulse And Impurity-Impurity Interaction Should Have Implications For The New Generations Of Cold-Atom Experiments.

Department(s)

Physics

Publication Status

Open Access

Comments

Deutsche Forschungsgemeinschaft, Grant EXC-2111–390814868 SFB 925

Keywords and Phrases

Bose polarons; correlations effects; radiofrequency spectroscopy; spinor impurities

International Standard Serial Number (ISSN)

1367-2630

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2024 The Authors, All rights reserved.

Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Publication Date

01 Apr 2021

Included in

Physics Commons

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