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arXiv 1708.02112cond-mat.quant-gasphysics.atom-phquant-ph
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超冷分子中的合成维度:量子弦和膜

Synthetic dimensions in ultracold molecules: quantum strings and membranes

Bhuvanesh Sundar, Bryce Gadway, Kaden R. A. Hazzard

摘要:

合成维度改变了自然界最基本的属性之一,空间维度。例如,它们允许一个真正的三维系统有效地充当四维系统。在这种可能性的驱动下,合成维度已经在超冷物质的持续实验中被设计出来。我们表明,旋转状态的超冷分子可以被用来作为合成尺寸延伸到许多-潜在的数百-合成晶格网站。耦合旋转状态的微波驱动完全可控的合成位间隧穿,从而实现例如拓扑能带结构。相互作用导致了更丰富的行为:当分子被冻结在具有均匀合成隧道的实空间晶格中时,偶极相互作用导致分子在合成方向上聚集成一个超过临界相互作用强度的窄条,导致量子弦或膜,并在这个弦或膜上出现凝聚体。所有这些相位都可以通过测量转动态粒子数来检测。

英文摘要:

Synthetic dimensions alter one of the most fundamental properties in nature, the dimension of space. They allow, for example, a real three-dimensional system to act as effectively four-dimensional. Driven by such possibilities, synthetic dimensions have been engineered in ongoing experiments with ultracold matter. We show that rotational states of ultracold molecules can be used as synthetic dimensions extending to many - potentially hundreds of - synthetic lattice sites. Microwaves coupling rotational states drive fully controllable synthetic inter-site tunnelings, enabling, for example, topological band structures. Interactions leads to even richer behavior: when molecules are frozen in a real space lattice with uniform synthetic tunnelings, dipole interactions cause the molecules to aggregate to a narrow strip in the synthetic direction beyond a critical interaction strength, resulting in a quantum string or a membrane, with an emergent condensate that lives on this string or membrane. All these phases can be detected using measurements of rotational state populations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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