Robb G R M, Tesio E, Oppo G-L, Firth W J, Ackemann T, Bonifacio R
SUPA and Department of Physics, University of Strathclyde, Glasgow G4 0NG, Scotland, United Kingdom.
INFN-LNF, Via Enrico Fermi, 40-00044 Frascati, Rome, Italy.
Phys Rev Lett. 2015 May 1;114(17):173903. doi: 10.1103/PhysRevLett.114.173903.
Theoretical analysis of the optomechanics of degenerate bosonic atoms with a single feedback mirror shows that self-structuring occurs only above an input threshold that is quantum mechanical in origin. This threshold also implies a lower limit to the size (period) of patterns that can be produced in a condensate for a given pump intensity. These thresholds are interpreted as due to the quantum rigidity of Bose-Einstein condensates, which has no classical counterpart. Above the threshold, the condensate self-organizes into an ordered supersolid state with a spatial period self-selected by optical diffraction.
对具有单个反馈镜的简并玻色子原子光力学的理论分析表明，自组织仅在源于量子力学的输入阈值之上发生。该阈值还意味着对于给定泵浦强度，凝聚物中可产生的图案尺寸（周期）的下限。这些阈值被解释为是由于玻色 - 爱因斯坦凝聚物的量子刚性，这没有经典对应物。在阈值之上，凝聚物自组织成具有由光衍射自选择的空间周期的有序超固体状态。
