Using the periodic orbit theory, we computed the quantum level density of a particle in the two-dimensional harmonic oscillator potential with and without the magnetic flux line for different cases.

利用周期轨道理论，我们计算了在不同情况下，一个粒子在二维谐振子势中存在和不存在磁通量时的量子能级密度。

youdao

They've shown that a synthetically grown sample of herbertsmithite crystal (what you see above) behaves as a quantum spin liquid: a material where fractional quantum states produce a liquid-like flux in magnetic orientations, even if the material is solid.

ENGADGET: MIT demos new form of magnetism that could lead to quantum communication, storage