We study the quasiparticle excitation and quench dynamics of the one-dimensional transverse-field Ising model with power-law (1/rα) interactions. We find that long-range interactions give rise to a confining potential, which couples pairs of domain walls (kinks) into bound quasiparticles, analogous to mesonic bound states in high-energy physics. We show that these bound states have dramatic consequences for the non-equilibrium dynamics following a global quantum quench, such as suppressed spreading of quantum information and oscillations of order parameters. The masses of these bound states can be read out from the Fourier spectrum of these oscillating order parameters. We then use a two-kink model to qualitatively explain the phenomenon of long-range-interaction-induced confinement. The masses of the bound states predicted by this model are in good quantitative agreement with exact diagonalization results. Moreover, we illustrate that these bound states lead to weak thermalization of local observables for initial states with energy near the bottom of the many-body energy spectrum. Our work is readily applicable to current trapped-ion experiments.

VL - 122 UR - https://arxiv.org/abs/1810.02365 CP - 150601 U5 - https://doi.org/10.1103/PhysRevLett.122.150601 ER - TY - JOUR T1 - Opportunities for Nuclear Physics & Quantum Information Science Y1 - 2019 A1 - I. C. Cloët A1 - Matthew R. Dietrich A1 - John Arrington A1 - Alexei Bazavov A1 - Michael Bishof A1 - Adam Freese A1 - Alexey V. Gorshkov A1 - Anna Grassellino A1 - Kawtar Hafidi A1 - Zubin Jacob A1 - Michael McGuigan A1 - Yannick Meurice A1 - Zein-Eddine Meziani A1 - Peter Mueller A1 - Christine Muschik A1 - James Osborn A1 - Matthew Otten A1 - Peter Petreczky A1 - Tomas Polakovic A1 - Alan Poon A1 - Raphael Pooser A1 - Alessandro Roggero A1 - Mark Saffman A1 - Brent VanDevender A1 - Jiehang Zhang A1 - Erez Zohar AB -his whitepaper is an outcome of the workshop Intersections between Nuclear Physics and Quantum Information held at Argonne National Laboratory on 28-30 March 2018 [www.phy.anl.gov/npqi2018/]. The workshop brought together 116 national and international experts in nuclear physics and quantum information science to explore opportunities for the two fields to collaborate on topics of interest to the U.S. Department of Energy (DOE) Office of Science, Office of Nuclear Physics, and more broadly to U.S. society and industry. The workshop consisted of 22 invited and 10 contributed talks, as well as three panel discussion sessions. Topics discussed included quantum computation, quantum simulation, quantum sensing, nuclear physics detectors, nuclear many-body problem, entanglement at collider energies, and lattice gauge theories.

UR - https://arxiv.org/abs/1903.05453 ER -