Anderson B P, Haljan P C, Regal C A, Feder D L, Collins L A, Clark C W, Cornell E A
JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder 80309-0440, USA.
Phys Rev Lett. 2001 Apr 2;86(14):2926-9. doi: 10.1103/PhysRevLett.86.2926.
We have created spatial dark solitons in two-component Bose-Einstein condensates in which the soliton exists in one of the condensate components and the soliton nodal plane is filled with the second component. The filled solitons are stable for hundreds of milliseconds. The filling can be selectively removed, making the soliton more susceptible to dynamical instabilities. For a condensate in a spherically symmetric potential, these instabilities cause the dark soliton to decay into stable vortex rings. We have imaged the resulting vortex rings.
我们在双组分玻色-爱因斯坦凝聚体中创造了空间暗孤子，其中孤子存在于凝聚体的一个组分中，而孤子节点平面则充满了另一个组分。填充的孤子在数百毫秒内是稳定的。填充可以被选择性地去除，使孤子更容易受到动力学不稳定性的影响。对于处于球对称势中的凝聚体，这些不稳定性会导致暗孤子衰变成稳定的涡旋环。我们已经对产生的涡旋环进行了成像。
