Interferometric probes of many-body localization

Autor:	Serbyn, M., Knap, M., Gopalakrishnan, S., Papić, Z., Yao, N. Y., Laumann, C. R., Abanin, D. A., Lukin, M. D., Demler, E. A.
Rok vydání:	2014
Předmět:	Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Quantum Gases Condensed Matter - Statistical Mechanics
Zdroj:	Phys. Rev. Lett. 113, 147204 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.113.147204
Popis:	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. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.0693 Zobrazit plný text záznamu View this record from Arxiv