Topological pumping of a 1D dipolar gas into strongly correlated prethermal states

doi:10.1126/science.abb4928

GSTDTAP > 气候变化

DOI	10.1126/science.abb4928
	Topological pumping of a 1D dipolar gas into strongly correlated prethermal states
	Wil Kao; Kuan-Yu Li; Kuan-Yu Lin; Sarang Gopalakrishnan; Benjamin L. Lev
	2021-01-15
发表期刊	Science
出版年	2021
英文摘要	Most nonequilibrium, many-particle systems eventually reach a thermal state. However, some one-dimensional quantum systems do not thermalize, although they may settle into a long-term equilibrium state. Kao et al. studied such a system consisting of dipolar dysprosium atoms confined in an optical potential shaped like a two-dimensional array of elongated tubes. The authors cycled the contact interaction between the atoms in a prescribed way, creating increasingly excited nonthermal quantum many-body states. Science , this issue p. [296][1] Long-lived excited states of interacting quantum systems that retain quantum correlations and evade thermalization are of great fundamental interest. We create nonthermal states in a bosonic one-dimensional (1D) quantum gas of dysprosium by stabilizing a super-Tonks-Girardeau gas against collapse and thermalization with repulsive long-range dipolar interactions. Stiffness and energy-per-particle measurements show that the system is dynamically stable regardless of contact interaction strength. This enables us to cycle contact interactions from weakly to strongly repulsive, then strongly attractive, and finally weakly attractive. We show that this cycle is an energy-space topological pump (caused by a quantum holonomy). Iterating this cycle offers an unexplored topological pumping method to create a hierarchy of increasingly excited prethermal states. [1]: /lookup/doi/10.1126/science.abb4928
领域	气候变化 ; 资源环境
URL	查看原文
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/311509
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Wil Kao,Kuan-Yu Li,Kuan-Yu Lin,et al. Topological pumping of a 1D dipolar gas into strongly correlated prethermal states[J]. Science,2021.
APA	Wil Kao,Kuan-Yu Li,Kuan-Yu Lin,Sarang Gopalakrishnan,&Benjamin L. Lev.(2021).Topological pumping of a 1D dipolar gas into strongly correlated prethermal states.Science.
MLA	Wil Kao,et al."Topological pumping of a 1D dipolar gas into strongly correlated prethermal states".Science (2021).