Floquet Hamiltonian engineering of an isolated many-body spin system

被引：82

作者：

Geier, Sebastian ^{[1
]}

Thaicharoen, Nithiwadee ^{[1
,2
]}

Hainaut, Clement ^{[1
]}

Franz, Titus ^{[1
]}

Salzinger, Andre ^{[1
]}

Tebben, Annika ^{[1
]}

Grimshandl, David ^{[1
]}

Zurn, Gerhard ^{[1
]}

Weidemuller, Matthias ^{[1
]}

机构：

[1] Heidelberg Univ, Phys Inst, Neuenheimer Feld 226, D-69120 Heidelberg, Germany

[2] Chiang Mai Univ, Fac Sci, Res Ctr Quantum Technol, 239 Huay Kaew Rd, Chiang Mai 50200, Thailand

来源：

SCIENCE | 2021年 / 374卷 / 6571期

基金：

欧盟地平线“2020”;

关键词：

QUANTUM; ORDER; MODEL;

D O I：

10.1126/science.abd9547

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Controlling interactions is the key element for the quantum engineering of many-body systems. Using time-periodic driving, a naturally given many-body Hamiltonian of a closed quantum system can be transformed into an effective target Hamiltonian that exhibits vastly different dynamics. We demonstrate such Floquet engineering with a system of spins represented by Rydberg states in an ultracold atomic gas. By applying a sequence of spin manipulations, we change the symmetry properties of the effective Heisenberg XYZ Hamiltonian. As a consequence, the relaxation behavior of the total spin is drastically modified. The observed dynamics can be qualitatively captured by a semiclassical simulation. Engineering a wide range of Hamiltonians opens vast opportunities for implementing quantum simulation of nonequilibrium dynamics in a single experimental setting.

引用

页码：1149 / +

页数：17

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