2016/02/17 by Johan Carlström, Nikolay Prokof’ev, Nikolay Prokof'ev +1 · 3 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Degenerate energy levels #Lattice (music) #Maxima and minima #Optical lattice #Physics #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum many-body systems #Quantum mechanics #Quantum walk #Realization (probability) #Spin (aerodynamics) #Statistical physics #Ultracold atom #cond-mat.quant-gas #msc:82C99 #quant-ph
paper · pdf · doi:10.1103/physrevlett.116.247202
published as Phys. Rev. Lett. 116, 247202 (2016) · 5 Pages, 5 Figures
arxiv created 2016/02/17 · openalex publication_date 2016/06/14 · arxiv updated 2016/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the propagation of a hole in degenerate (paramagnetic) spin environments. This canonical problem has important connections to a number of physical systems, and is perfectly suited for experimental realization with ultracold atoms in an optical lattice. At the short-to-intermediate time scale that we can access using a stochastic-series-type numeric scheme, the propagation turns out to be distinctly nondiffusive with the probability distribution featuring minima in both space and time due to quantum interference, yet the motion is not ballistic, except at the beginning. We discuss possible scenarios for long-term evolution that could be explored with an unprecedented degree of detail in experiments with single-atom resolved imaging.