Real-time dynamics of lattice gauge theories with a few-qubit quantum computer
This work reports the experimental demonstration of a digital quantum simulation of a lattice gauge theory, by realizing (1 + 1)-dimensional quantum electrodynamics (the Schwinger model) on a few-qubit trapped-ion quantum computer and explores the Schwinger mechanism of particle–antiparticle generation by monitoring the mass production and the vacuum persistence amplitude.
Boundary Time Crystals.
- F. Iemini, A. Russomanno, Jonathan Keeling, M. Schirò, M. Dalmonte, R. Fazio
- PhysicsPhysical Review Letters
- 16 August 2017
This work introduces boundary time crystals and analyzes in detail a solvable model where an accurate scaling analysis can be performed.
Floquet time crystal in the Lipkin-Meshkov-Glick model
In this work we discuss the existence of time-translation symmetry breaking in a kicked infinite-range-interacting clean spin system described by the Lipkin-Meshkov-Glick model. This Floquet time…
Lattice Gauge Theories and String Dynamics in Rydberg Atom Quantum Simulators
Gauge theories are the cornerstone of our understanding of fundamental interactions among particles. Their properties are often probed in dynamical experiments, such as those performed at ion…
Observation of chiral edge states with neutral fermions in synthetic Hall ribbons
The experimental realization of fermionic chiral edge states in a ribbon geometry with an ultracold gas of neutral fermions subjected to an artificial gauge field opens the door for edge state interferometry and the study of non-Abelian anyons in atomic systems.
Many-Body Localization Dynamics from Gauge Invariance.
It is shown how lattice gauge theories can display many-body localization dynamics in the absence of disorder, and how memory effects and slow, double-logarithmic entanglement growth are present in a broad regime of parameters-in particular, for sufficiently large interactions.
Majorana edge States in atomic wires coupled by pair hopping.
- C. Kraus, M. Dalmonte, M. Baranov, A. Läuchli, P. Zoller
- PhysicsPhysical Review Letters
- 4 February 2013
We present evidence for Majorana edge states in a number conserving theory describing a system of spinless fermions on two wires that are coupled by pair hopping. Our analysis is based on a…
Atomic quantum simulation of dynamical gauge fields coupled to fermionic matter: from string breaking to evolution after a quench.
Using a Fermi-Bose mixture of ultracold atoms in an optical lattice, a quantum simulator is constructed for a U(1) gauge theory coupled to fermionic matter to investigate string breaking as well as the real-time evolution after a quench in gauge theories, which are inaccessible to classical simulation methods.
Quantum spin-ice and dimer models with Rydberg atoms
Quantum spin-ice represents a paradigmatic example of how the physics of frustrated magnets is related to gauge theories. In the present work, we address the problem of approximately realizing…
Pinning quantum phase transition for a Luttinger liquid of strongly interacting bosons
The sine–Gordon quantum phase transition from a superfluid Luttinger liquid to a Mott insulator—in a one-dimensional quantum gas of bosonic caesium atoms with tunable interactions is observed, and measurements in the strongly interacting regime agree well with a quantum field description based on the exactly solvable sine-Gordon model.