Abstract
We Unravel The Correlated Quantum Quench Dynamics Of A Single Impurity Immersed In A Bosonic Environment Confined In An One-Dimensional Double-Well Potential. A Particular Emphasis Is Placed On The Structure Of The Time-Evolved Many-Body (MB) Wave Function By Relying On A Schmidt Decomposition Whose Coefficients Directly Quantify The Number Of Configurations That Are Macroscopically Populated. For A Non-Interacting Bosonic Bath And Weak Postquench Impurity-Bath Interactions, We Observe The Dynamical Formation Of A Two-Fold Fragmented MB State Which Is Related To Intra-Band Excitation Processes Of The Impurity And Manifests As A Two-Body Phase Separation (Clustering) Between The Two Species For Repulsive (Attractive) Interactions. Increasing The Postquench Impurity-Bath Coupling Strength Leads To The Destruction Of The Two-Fold Fragmentation Since The Impurity Undergoes Additional Inter-Band Excitation Dynamics. By Contrast, A Weakly Interacting Bath Suppresses Excitations Of The Bath Particles And Consequently The System Attains A Weakly Fragmented MB State. Our Results Explicate The Interplay Of Intra- And Inter-Band Impurity Excitations For The Dynamical Generation Of Fragmented MB States In Multi-Well Traps And For Designing Specific Entangled Impurity States.
Recommended Citation
J. Chen et al., "Dynamical Formation Of Two-Fold Fragmented Many-Body State Induced By An Impurity In A Double-Well," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 56, no. 7, article no. 075003, IOP Publishing, Apr 2023.
The definitive version is available at https://doi.org/10.1088/1361-6455/acbef3
Department(s)
Physics
Keywords and Phrases
one-dimensional physics; two-fold fragmented many-body state; ultracold atomic mixture
International Standard Serial Number (ISSN)
1361-6455; 0953-4075
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 IOP Publishing, All rights reserved.
Publication Date
14 Apr 2023
Comments
National Science Foundation, Grant 170620586