Experimentally testing quantum critical dynamics beyond the Kibble–Zurek mechanism

  title={Experimentally testing quantum critical dynamics beyond the Kibble–Zurek mechanism},
  author={Jin-Ming Cui and Fernando J. G{\'o}mez-Ruiz and Yun-Feng Huang and Chuan-Feng Li and Guangcan Guo and Adolfo del Campo},
  journal={Communications Physics},
The Kibble–Zurek mechanism (KZM) describes the dynamics across a phase transition leading to the formation of topological defects, such as vortices in superfluids and domain walls in spin systems. Here, we experimentally probe the distribution of kink pairs in a one-dimensional quantum Ising chain driven across the paramagnet-ferromagnet quantum phase transition, using a single trapped ion as a quantum simulator in momentum space. The number of kink pairs after the transition follows a Poisson… 
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Kibble–Zurek mechanism in the Ising Field Theory
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Kibble-Zurek mechanism from different angles: The transverse XY model and subleading scalings
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Universal statistics of vortices in a newborn holographic superconductor: beyond the Kibble-Zurek mechanism
Abstract Traversing a continuous phase transition at a finite rate leads to the breakdown of adiabatic dynamics and the formation of topological defects, as predicted by the celebrated Kibble-Zurek
Work Statistics across a Quantum Phase Transition.
This study deepens the understanding about the nonequilibrium dynamics of a quantum phase transition by revealing the imprint of the KZM on the work statistics.
Experimental verification of anti–Kibble-Zurek behavior in a quantum system under a noisy control field
The Kibble-Zurek (KZ) mechanism is a universal framework that can in principle describe nonequilibrium phase transition phenomena in any system with the required symmetry properties. However, a
Kibble Zurek mechanism in rapidly quenched phase transition dynamics
We propose a theory to explain the experimental observed deviation from the Kibble-Zurek mechanism (KZM) scaling in rapidly quenched critical phase transition dynamics. There is a critical quench
Universal dynamics of the superradiant phase transition in the anisotropic quantum Rabi model
We investigate the universally non-equilibrium dynamics of superradiant phase transition in the anisotropic quantum Rabi model. By introducing position and momentum operators, we obtain the ground
Universal finite-time thermodynamics of many-body quantum machines from Kibble-Zurek scaling
We demonstrate the existence of universal features in the finite-time thermodynamics of quantum machines by considering a many-body quantum Otto cycle in which the working medium is driven across
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Simulating the Kibble-Zurek mechanism of the Ising model with a superconducting qubit system
The results provide the experimental evidence of the close connection between KZM and LZT, two textbook paradigms to study the dynamics of the non-equilibrium phenomena, and develop a time-resolved approach to study quantum dynamics of LT with nano-second resolution.
Kibble–Zurek universality in a strongly interacting Fermi superfluid
The Kibble–Zurek mechanism describes the spontaneous formation of topological defects in a system crossing a continuous phase transition1,2. Its central premise is the notion of universality, which
Quantum simulation of Landau-Zener model dynamics supporting the Kibble-Zurek mechanism.
A quantum simulation of the nonequilibrium dynamics of the Landau-Zener model based on a nine-stage optical interferometer with an overall visibility of 0.975±0.008 supports the adiabatic-impulse approximation, which is the core of Kibble-Zurek theory.
Quantitative verification of the Kibble-Zurek mechanism in quantum non-equilibrium dynamics
The Kibble-Zurek mechanism (KZM) captures the key physics in the non-equilibrium dynamics of second-order phase transitions, and accurately predict the density of the topological defects formed in
Universal Statistics of Topological Defects Formed in a Quantum Phase Transition.
When a quantum phase transition is crossed in finite time, critical slowing down leads to the breakdown of adiabatic dynamics and the formation of topological defects. The average density of defects
Universal Statistics of Topological Defects Formed in a Quantum Phase Transition.
The full counting statistics of kinks are analyzed and the exact kink number distribution in the transverse-field quantum Ising model is reported, which is expected to apply broadly in systems described by the Kibble-Zurek mechanism.
Observation of the Kibble-Zurek scaling law for defect formation in ion crystals.
This work determines the scaling law for defect formation in a crystal of 16 laser-cooled trapped ions, which are conducive to the precise control of structural phases and the detection of defects, and demonstrates that the scaling laws also apply in the mesoscopic regime.
Experimental Trapped-ion Quantum Simulation of the Kibble-Zurek dynamics in momentum space
The experimental quantum simulation of critical dynamics in the transverse-field Ising model by a set of Landau-Zener crossings in pseudo-momentum space, that can be probed with high accuracy using a single trapped ion.
Quench Dynamics of Quantum and Classical Ising Chains: From the Viewpoint of the Kibble–Zurek Mechanism
In most macroscopic systems, the state in the equilibrium undergoes a phase transition when the temperature is changed. In the ordinary phase transition, the correlation length and the relaxation
Universal Dynamics of Inhomogeneous Quantum Phase Transitions: Suppressing Defect Formation.
The reduced density of excitations exhibits a much steeper dependence on the quench rate and is also described by a universal power law that is demonstrated in a quantum Ising chain.