Interferometric probes of many-body localization
Abstract
We propose a method for detecting many-body localization (MBL) in disordered spin systems. The method involves pulsed, coherent spin manipulations that probe the dephasing of a given spin due to its entanglement with a set of distant spins. It allows one to distinguish the MBL phase from a non-interacting localized phase and a delocalized phase. In particular, we show that for a properly chosen pulse sequence the MBL phase exhibits a characteristic power-law decay reflecting its slow growth of entanglement. We find that this power-law decay is robust with respect to thermal and disorder averaging, provide numerical simulations supporting our results, and discuss possible experimental realizations in solid-state and cold atom systems.
Cite
@article{arxiv.1403.0693,
title = {Interferometric probes of many-body localization},
author = {M. Serbyn and M. Knap and S. Gopalakrishnan and Z. Papić and N. Y. Yao and C. R. Laumann and D. A. Abanin and M. D. Lukin and E. A. Demler},
journal= {arXiv preprint arXiv:1403.0693},
year = {2014}
}
Comments
5 pages, 4 figures