Related papers: Stabilizer Scars

Related papers

Exact stabilizer scars in two-dimensional $U(1)$ lattice gauge theory [0.27998963147546146]
We find a class of scarred eigenstates, termed sublattice scars, originating from gauge-invariant zero modes that form exact stabilizer states.<n>Although the underlying Hamiltonian is not a stabilizer Hamiltonian, its eigenspectrum intrinsically hosts exact stabilizer eigenstates.<n>Our results demonstrate that the scarred subspace of the Rokhsar-Kivelson spectrum forms an intrinsic stabilizer manifold.
arXiv Detail & Related papers (2026-03-03T14:57:58Z)
Tuning the Quantum Mpemba Effect in Isolated System by Initial State Engineering [11.207785341796862]
We investigate the quantum Mpemba effect (QME) in isolated, non-integrable quantum systems.<n>We identify a tunable mechanism that influences the emergence of QME, showing faster relaxation from certain out-of-equilibrium states.<n>We propose an experimentally realizable quantum circuit, which requires no complex controls on quantum simulator platforms.
arXiv Detail & Related papers (2025-05-04T09:29:24Z)
On a modified quantum theory with objective quantum thermalization and spontaneous universal irreversibility [0.0]
We argue that quantum theory is an effective theory and requires corrections to accurately describe systems approaching the thermodynamic limit. We construct a minimal extension of quantum theory which is practically identical to quantum mechanics for microscopic systems. We discuss the inclusion of objective collapse, thereby realizing a falsifiable theory of spontaneous universal irreversibility.
arXiv Detail & Related papers (2025-04-22T18:38:28Z)
Stable infinite-temperature eigenstates in SU(2)-symmetric nonintegrable models [0.0]
A class of nonintegrable bond-staggered models is endowed with a large number of zero-energy eigenstates and possesses a non-Abelian internal symmetry. We show that few-magnon zero-energy states have an exact analytical description, allowing us to build a basis of low-entangled fixed-separation states.
arXiv Detail & Related papers (2024-07-16T17:48:47Z)
Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions. We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
arXiv Detail & Related papers (2024-05-27T17:40:39Z)
Quantum many-body scars from unstable periodic orbits [30.38539960317671]
Unstable periodic orbits play a key role in the theory of chaos. We find the first quantum many-body scars originating from UPOs of a chaotic phase space.
arXiv Detail & Related papers (2024-01-12T19:00:02Z)
Quantum Thermal State Preparation [39.91303506884272]
We introduce simple continuous-time quantum Gibbs samplers for simulating quantum master equations. We construct the first provably accurate and efficient algorithm for preparing certain purified Gibbs states. Our algorithms' costs have a provable dependence on temperature, accuracy, and the mixing time.
arXiv Detail & Related papers (2023-03-31T17:29:56Z)
Universality of critical dynamics with finite entanglement [68.8204255655161]
We study how low-energy dynamics of quantum systems near criticality are modified by finite entanglement. Our result establishes the precise role played by entanglement in time-dependent critical phenomena.
arXiv Detail & Related papers (2023-01-23T19:23:54Z)
Demonstrating Quantum Microscopic Reversibility Using Coherent States of Light [58.8645797643406]
We propose and experimentally test a quantum generalization of the microscopic reversibility when a quantum system interacts with a heat bath. We verify that the quantum modification for the principle of microscopic reversibility is critical in the low-temperature limit.
arXiv Detail & Related papers (2022-05-26T00:25:29Z)
Stabilizing Gauge Theories in Quantum Simulators: A Brief Review [0.0]
Implementation of gauge theories on modern quantum simulators is appealing due to three main reasons. It offers a new probe of high-energy physics on low-energy tabletop devices. It serves as a banner of experimental benchmarking. In order to faithfully model gauge-theory phenomena on a quantum simulator, stabilizing the underlying gauge symmetry is essential.
arXiv Detail & Related papers (2022-04-28T18:00:01Z)
Prominent quantum many-body scars in a truncated Schwinger model [0.0]
We show that quantum many-body scars exist in a truncated version of the Schwinger model. Our conclusions can be readily tested in current cold-atom setups.
arXiv Detail & Related papers (2022-04-04T18:00:01Z)
Coherent quantum annealing in a programmable 2000-qubit Ising chain [1.2472275770062884]
We show coherent evolution through a quantum phase transition in the paradigmatic setting of the 1D transverse-field Ising chain. Results are in quantitative agreement with analytical solutions to the closed-system quantum model. These experiments demonstrate that large-scale quantum annealers can be operated coherently.
arXiv Detail & Related papers (2022-02-11T19:00:00Z)
Taking the temperature of a pure quantum state [55.41644538483948]
Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. We propose a scheme to measure the temperature of such pure states through quantum interference.
arXiv Detail & Related papers (2021-03-30T18:18:37Z)
Non-equilibrium stationary states of quantum non-Hermitian lattice models [68.8204255655161]
We show how generic non-Hermitian tight-binding lattice models can be realized in an unconditional, quantum-mechanically consistent manner. We focus on the quantum steady states of such models for both fermionic and bosonic systems.
arXiv Detail & Related papers (2021-03-02T18:56:44Z)
Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays [41.74498230885008]
We experimentally investigate non-equilibrium dynamics following rapid quenches in a many-body system composed of 3 to 200 strongly interacting qubits in one and two spatial dimensions. We discover that scar revivals can be stabilized by periodic driving, which generates a robust subharmonic response akin to discrete time-crystalline order.
arXiv Detail & Related papers (2020-12-22T19:00:02Z)
Exact many-body scars and their stability in constrained quantum chains [55.41644538483948]
Quantum scars are non-thermal eigenstates characterized by low entanglement entropy. We study the response of these exact quantum scars to perturbations by analysing the scaling of the fidelity susceptibility with system size.
arXiv Detail & Related papers (2020-11-16T19:05:50Z)
Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
arXiv Detail & Related papers (2020-07-20T18:00:02Z)
Quantum Many-Body Scars in Optical Lattices [0.0]
We propose a simple setup to generate quantum many-body scars in a doubly modulated Bose-Hubbard system. The dynamics are shown to be governed by kinetic constraints which appear via density assisted tunneling in a high-frequency expansion.
arXiv Detail & Related papers (2020-02-05T12:15:04Z)

This list is automatically generated from the titles and abstracts of the papers in this site.