Observation of Stark many-body localization without disorder.

@article{Morong2021ObservationOS,
  title={Observation of Stark many-body localization without disorder.},
  author={W. Morong and F. Liu and Patrick Becker and K S Collins and L. Feng and Antonios Kyprianidis and Guido Pagano and T You and Alexey V. Gorshkov and Christopher R. Monroe},
  journal={Nature},
  year={2021},
  volume={599 7885},
  pages={
          393-398
        }
}
Thermalization is a ubiquitous process of statistical physics, in which a physical system reaches an equilibrium state that is defined by a few global properties such as temperature. Even in isolated quantum many-body systems, limited to reversible dynamics, thermalization typically prevails1. However, in these systems, there is another possibility: many-body localization (MBL) can result in preservation of a non-thermal state2,3. While disorder has long been considered an essential ingredient… 

Figures and Tables from this paper

Stark Many-Body Localization on a Superconducting Quantum Processor
TLDR
A quantum device composed of 29 functional superconducting qubits is constructed, faithfully reproducing the relaxation dynamics of a nonintegrable spin model, and its flexible programmability highlights its potential in helping the understanding of nontrivial quantum many-body problems, in direct complement to simulations in classical computers.
Robustness of Stark many-body localization in the J1−J2 Heisenberg model
Stark many-body localization (SMBL) is a phenomenon observed in interacting systems with a nearly uniform spatial gradient applied field. Contrasting to the traditional many-body localization
Can we observe the many-body localization?
We study time dynamics of 1D disordered Heisenberg spin-1/2 chain focusing on a regime of large system sizes and a long time evolution. This regime is relevant for observation of manybody
Challenges to observation of many-body localization
We study time dynamics of 1D disordered Heisenberg spin-1/2 chain focusing on a regime of large system sizes and a long time evolution. This regime is relevant for observation of manybody
Dynamics of Negativity of a Wannier–Stark Many‐Body Localized System Coupled to a Bath
An interacting system subjected to a strong linear potential can host a many‐body localized (MBL) phase when being slightly perturbed. This so‐called Wannier–Stark or “tilted‐field” MBL phase
Weak ergodicity breaking through the lens of quantum entanglement
Recent studies of interacting systems of quantum spins, ultracold atoms and correlated fermions have shed a new light on how isolated many-body systems can avoid rapid equilibration to their thermal
Dynamical l-bits in Stark many-body localization
Stark many-body localized (SMBL) systems have been shown both numerically and experimentally to have Bloch many-body oscillations, quantum many-body scars, and fragmentation in the large field tilt
Down-conversion of a single photon as a probe of many-body localization
Decay of a particle into more particles is a ubiquitous phenomenon to interacting quantum systems, taking place in colliders, nuclear reactors, or solids. In a non-linear medium, even a single photon
Suppression of heating by long-range interactions in periodically driven spin chains
We propose a mechanism to suppress heating in periodically driven many-body quantum systems by employing sufficiently long-range interactions and experimentally relevant initial conditions. The
Single-Particle Mobility Edge without Disorder
The existence of localization and mobility edges in one-dimensional lattices is commonly thought to depend on disorder (or quasidisorder). We investigate localization properties of a disorder-free
...
1
2
3
...

References

SHOWING 1-10 OF 103 REFERENCES
Many-body localization in a quantum simulator with programmable random disorder
Interacting quantum systems are expected to thermalize, but in some situations in the presence of disorder they can exist in localized states instead. This many-body localization is studied
From Bloch oscillations to many-body localization in clean interacting systems
TLDR
It is demonstrated that nonrandom mechanisms that lead to single-particle localization may also lead to many-body localization, even in the absence of disorder, and a class of generic nonrandom models that fail to thermalize are constituted, which suggest new directions for experimentally exploring and understanding the phenomena of many- body localization.
Many-body localization in a quasiperiodic system
Recent theoretical and numerical evidence suggests that localization can survive in disordered many-body systems with very high energy density, provided that interactions are sufficiently weak.
Observation of prethermalization in long-range interacting spin chains
TLDR
This work experimentally studies the relaxation dynamics of a chain of up to 22 spins evolving under a long-range transverse-field Ising Hamiltonian following a sudden quench, and shows that prethermalization occurs in a broader context than previously thought, and reveals new challenges for a generic understanding of the thermalization of quantum systems, particularly in the presence of long- range interactions.
Stark Many-Body Localization on a Superconducting Quantum Processor.
TLDR
A quantum device composed of 29 functional superconducting qubits is constructed, faithfully reproducing the relaxation dynamics of a nonintegrable spin model, and its flexible programmability highlights its potential in helping the understanding of nontrivial quantum many-body problems, in direct complement to simulations in classical computers.
Probing entanglement in a many-body–localized system
TLDR
This work experimentally establishes many-body localization as a qualitatively distinct phenomenon from localization in noninteracting, disordered systems in a disordered Bose-Hubbard chain.
Thermalization and its mechanism for generic isolated quantum systems
TLDR
It is demonstrated that a generic isolated quantum many-body system does relax to a state well described by the standard statistical-mechanical prescription, and it is shown that time evolution itself plays a merely auxiliary role in relaxation, and that thermalization instead happens at the level of individual eigenstates, as first proposed by Deutsch and Srednicki.
Many-Body Localization and Thermalization in Quantum Statistical Mechanics
We review some recent developments in the statistical mechanics of isolated quantum systems. We provide a brief introduction to quantum thermalization, paying particular attention to the eigenstate
Observation of many-body localization of interacting fermions in a quasirandom optical lattice
TLDR
This experiment experimentally observed this nonergodic evolution for interacting fermions in a one-dimensional quasirandom optical lattice and identified the MBL transition through the relaxation dynamics of an initially prepared charge density wave.
Probing many-body dynamics on a 51-atom quantum simulator
TLDR
This work demonstrates a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states, and realizes a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits.
...
1
2
3
4
5
...