Single-Particle Mobility Edge in a One-Dimensional Quasiperiodic Optical Lattice

Physical Review Letters
Henrik P LüschenImmanuel Bloch

Abstract

A single-particle mobility edge (SPME) marks a critical energy separating extended from localized states in a quantum system. In one-dimensional systems with uncorrelated disorder, a SPME cannot exist, since all single-particle states localize for arbitrarily weak disorder strengths. However, in a quasiperiodic system, the localization transition can occur at a finite detuning strength and SPMEs become possible. In this Letter, we find experimental evidence for the existence of such a SPME in a one-dimensional quasiperiodic optical lattice. Specifically, we find a regime where extended and localized single-particle states coexist, in good agreement with theoretical simulations, which predict a SPME in this regime.

References

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May 13, 2017·Physical Review Letters·Michael PasekDominique Delande

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Citations

Dec 1, 2018·Physical Review Letters·Shi-Xin Zhang, Hong Yao
Aug 7, 2019·Physical Review Letters·X DengL Santos
Aug 29, 2020·Physical Review Letters·Yucheng WangXiong-Jun Liu
Jan 5, 2019·Physical Review Letters·Yi-Ting HsuS Das Sarma
Dec 24, 2019·Physical Review Letters·Shankari V RajagopalDavid M Weld
May 21, 2019·Physical Review Letters·Thomas KohlertMonika Aidelsburger
Aug 7, 2019·Physical Review Letters·Vinitha BalachandranDario Poletti
Apr 4, 2020·Physical Review Letters·Honghao YinQing Sun
Sep 7, 2019·Physical Review Letters·Hepeng YaoLaurent Sanchez-Palencia
Feb 13, 2021·Physical Review Letters·Fangzhao Alex AnBryce Gadway
Nov 21, 2020·Physical Review Letters·Yucheng WangXiong-Jun Liu
Mar 31, 2021·Physical Review Letters·Shilpi RoySaurabh Basu

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