量子化超流体"原子电子"电路中的歇斯底里.
Stephen Eckel1, Jeffrey G Lee1, Fred Jendrzejewski1
1Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland 20899, USA.
Nature
|February 14, 2014
概括
研究人员首次观察到超流体斯-爱因斯坦凝结物的歇斯底里,这对于原子电子设备至关重要. 这一发现弥合了理论和实验之间的差距,为新的量子技术铺平了道路.
科学领域:
- 原子电子公司Atomtronics
- 量子物理学的量子物理学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 原子电子学是一个新兴的领域,在类似于电子设备的电路中使用超冷原子.
- 歇斯底里斯在电子和超导性中是基本的,但在超流体斯-爱因斯坦凝结体中没有观察到.
- 之前对超流体中歇斯底里的观测缺乏量化流量或是间接的.
研究的目的:
- 直接检测和描述超流体斯-爱因斯坦凝聚体中的歇斯底里.
- 调查激发和消散在超流体歇斯底里中的作用.
- 探索原子电子器件中受控歇斯底里的潜力.
主要方法:
- 用超流体斯-爱因斯坦凝结环制造一个原子电子电路.
- 引入一个旋转的弱环来阻碍超流体流动.
- 在量子化循环状态之间直接检测歇斯底里.
主要成果:
- 在超流体斯-爱因斯坦凝结体中,在量子化循环状态之间直接观察歇斯底里.
- 可调整的hysteresis循环大小的演示.
- 确定旋作为关键刺激,并确认散射的作用.
结论:
- 现在在超流体斯-爱因斯坦凝结体中实验证实了hysteresis.
- 原子电子电路中的受控歇斯底里可能使新的量子设备成为可能.
- 这项工作弥合了理解超流体动力学和原子电子学的关键差距.
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