TY - JOUR

T1 - Information propagation in long-range quantum many-body systems

AU - Lemm, Marius

AU - Rubiliani, Carla

AU - Sigal, Israel Michael

AU - Zhang, Jingxuan

N1 - Publisher Copyright: © 2023 American Physical Society.

PY - 2023

Y1 - 2023

N2 - We study general lattice bosons with long-range hopping and long-range interactions decaying as |x-y|-α with α∈(d+2,2d+1). We find a linear light cone for the information propagation starting from suitable initial states. We apply these bounds to estimate the minimal time needed for quantum messaging, for the propagation of quantum correlations, and for quantum state control. The proofs are based on the ASTLO method (adiabatic spacetime localization observables). Our results pose previously unforeseen limitations on the applicability of fast-transfer and entanglement-generation protocols developed for breaking linear light cones in long-range and/or bosonic systems.

AB - We study general lattice bosons with long-range hopping and long-range interactions decaying as |x-y|-α with α∈(d+2,2d+1). We find a linear light cone for the information propagation starting from suitable initial states. We apply these bounds to estimate the minimal time needed for quantum messaging, for the propagation of quantum correlations, and for quantum state control. The proofs are based on the ASTLO method (adiabatic spacetime localization observables). Our results pose previously unforeseen limitations on the applicability of fast-transfer and entanglement-generation protocols developed for breaking linear light cones in long-range and/or bosonic systems.

U2 - 10.1103/PhysRevA.108.L060401

DO - 10.1103/PhysRevA.108.L060401

M3 - Journal article

AN - SCOPUS:85175602520

VL - 108

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 6

M1 - L060401

ER -