1. Observation of energy-resolved many-body localization
- Author
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Hekang Li, Zixuan Song, Rubem Mondaini, Qiujiang Guo, Hang Dong, Zheng-Hang Sun, Wenhui Ren, Chen Cheng, Yu-Ran Zhang, Haohua Wang, Heng Fan, Zhen Wang, and Dongning Zheng
- Subjects
Superconductivity ,Thermal equilibrium ,Physics ,Quantum Physics ,Statistical Mechanics (cond-mat.stat-mech) ,Strongly Correlated Electrons (cond-mat.str-el) ,Phase (waves) ,FOS: Physical sciences ,General Physics and Astronomy ,Observable ,Disordered Systems and Neural Networks (cond-mat.dis-nn) ,Condensed Matter - Disordered Systems and Neural Networks ,01 natural sciences ,010305 fluids & plasmas ,Isolated system ,Condensed Matter - Strongly Correlated Electrons ,0103 physical sciences ,Statistical physics ,Quantum Physics (quant-ph) ,010306 general physics ,Wave function ,Quantum ,Condensed Matter - Statistical Mechanics ,Quantum computer - Abstract
Many-body localization (MBL) describes a quantum phase where an isolated interacting system subject to sufficient disorder displays non-ergodic behavior, evading thermal equilibrium that occurs under its own dynamics. Previously, the thermalization-MBL transition has been largely characterized with the growth of disorder. Here, we explore a new axis, reporting on an energy resolved MBL transition using a 19-qubit programmable superconducting processor, which enables precise control and flexibility of both disorder strength and initial state preparations. We observe that the onset of localization occurs at different disorder strengths, with distinguishable energy scales, by measuring time-evolved observables and many-body wavefunctions related quantities. Our results open avenues for the experimental exploration of many-body mobility edges in MBL systems, whose existence is widely debated due to system size finiteness, and where exact simulations in classical computers become unfeasible., Comment: 9 pages, 5 figures + supplementary information
- Published
- 2020