<正> Negativity has been adopted to investigate the entanglement in a system composed of a two-level atom anda two-mode ......

我们提出了一个制备多腔场薛定谔猫态的新方案.在这个方案里,我们需要一个两能级原子和几个铜的单模腔.其中,原子跃迁频率与各腔场......