B2 Institute, Department of Physics and College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA.
Phys Rev Lett. 2011 Jun 3;106(22):223601. doi: 10.1103/PhysRevLett.106.223601. Epub 2011 Jun 2.
We investigate the cavity optomechanical properties of an antiferromagnetic Bose-Einstein condensate, where the role of the mechanical element is played by spin-wave excitations. We show how this system can be described by a single rotor that can be prepared deep in the quantum regime under realizable experimental conditions. This system provides a bottom-up realization of dispersive rotational optomechanics, and opens the door to the direct observation of quantum spin fluctuations.
我们研究了反铁磁玻色-爱因斯坦凝聚体的腔光机械性质，其中机械元件的作用由自旋波激发来扮演。我们展示了这个系统如何可以通过单个转子来描述，在可实现的实验条件下，可以将这个转子深度制备到量子态。这个系统提供了一个从下至上的色散旋转光机械学的实现，并为直接观察量子自旋涨落打开了大门。
