Interferometric probes of many-body localization

M. Serbyn, M. Knap, S. Gopalakrishnan, Z. Papić, N. Y. Yao, C. R. Laumann, D. A. Abanin, M. D. Lukin, E. A. Demler

Research output: Contribution to journalArticlepeer-review

154 Scopus citations


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 noninteracting 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.

Original languageEnglish (US)
Article number147204
JournalPhysical review letters
Issue number14
StatePublished - Oct 3 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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