Geometric squeezing into the lowest Landau level

doi:10.1126/science.aba7202

GSTDTAP > 气候变化

DOI	10.1126/science.aba7202
	Geometric squeezing into the lowest Landau level
	Richard J. Fletcher; Airlia Shaffer; Cedric C. Wilson; Parth B. Patel; Zhenjie Yan; Valentin Crépel; Biswaroop Mukherjee; Martin W. Zwierlein
	2021-06-18
发表期刊	Science
出版年	2021
英文摘要	Ultracold atomic gases are very good at simulating electrons in solids but lack one essential party trick: charge. Their neutrality makes it challenging to simulate phenomena such as the quantum Hall effect, which, in the case of charged electrons, is easily induced by an external magnetic field. One way to produce a similar effect in a neutral system is to rotate it, but achieving the equivalent of strong magnetic fields remains difficult. Fletcher et al. rotated a gas of trapped sodium atoms, reaching a state in which the gas could be described by a single lowest Landau-level wave-function. The system is expected to be a testbed for studying the behavior of strongly interacting many-body states. Science , aba7202, this issue p. [1318][1] The equivalence between particles under rotation and charged particles in a magnetic field relates phenomena as diverse as spinning atomic nuclei, weather patterns, and the quantum Hall effect. For such systems, quantum mechanics dictates that translations along different directions do not commute, implying a Heisenberg uncertainty relation between spatial coordinates. We implement squeezing of this geometric quantum uncertainty, resulting in a rotating Bose-Einstein condensate occupying a single Landau gauge wave function. We resolve the extent of zero-point cyclotron orbits and demonstrate geometric squeezing of the orbits’ centers 7 decibels below the standard quantum limit. The condensate attains an angular momentum exceeding 1000 quanta per particle and an interatomic distance comparable to the cyclotron orbit. This offers an alternative route toward strongly correlated bosonic fluids. [1]: /lookup/doi/10.1126/science.aba7202
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/330809
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Richard J. Fletcher,Airlia Shaffer,Cedric C. Wilson,et al. Geometric squeezing into the lowest Landau level[J]. Science,2021.
APA	Richard J. Fletcher.,Airlia Shaffer.,Cedric C. Wilson.,Parth B. Patel.,Zhenjie Yan.,...&Martin W. Zwierlein.(2021).Geometric squeezing into the lowest Landau level.Science.
MLA	Richard J. Fletcher,et al."Geometric squeezing into the lowest Landau level".Science (2021).