在拓散射原子腔系统中的自振动
在PubMed上查看摘要
概括
此摘要是机器生成的。研究人员发现了一种在没有外部周期驱动器的情况下在量子气体中产生粒子电流的新方法. 这种新兴的机制利用自相一致的空腔场,模仿拓模型并显示散射时间晶体的特征.
科学领域
- 量子物理学
- 凝聚物质物理
- 量子光学
背景情况
- 是循环潜力演化的运输机制.
- 的拓起源是已知的,但需要外部周期电位.
- 现有的实验系统依赖于外部传递的周期性进化.
研究的目的
- 报告一个量子气体中粒子送的新兴机制.
- 为了证明没有应用周期驱动器的粒子电流产生.
- 调查与光学共振器合的量子系统中的一种新的机制.
主要方法
- 连接一个量子气体到一个光学共振器.
- 使用一个自相一致的空洞场形成一个潜力.
- 在方位之间利用散射诱导的腔场演变.
- 测量空洞场的相绕,并观察原子运动.
主要成果
- 在没有外部周期驱动的情况下观察到量子气体中的粒子电流.
- 证明了一个由自相一致的空腔场驱动的新兴抽机制.
- 该系统表现出类似于米的拓模型的周期性潜力.
- 观察到的动态结合了拓和开放系统的特性.
结论
- 在量子气光共振器系统中发现了一个新兴的抽机制.
- 这种机制在没有外部周期驱动的情况下产生粒子流,由自相一致的场所驱动.
- 该系统表现出连续散射时间晶体的特征,融合了拓和开放系统动态.
相关概念视频
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
The...
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn,...
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
Using the equations of force and motion, the amplitude of the driven oscillator is obtained. It depends on the natural and driving frequency.
In the equation for amplitude, when the driving frequency is much smaller...
Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so...

