Quantum beat phenomenon presence in coherent spin dynamics of spin-2 ${}^{87}$Rb atoms in a deep optical lattice

Hua-Jun Huang, Guang-Ming Zhang

Motivated by the recent experimental work (A. Widera, \textit{et al}, Phys. Rev. Lett. 95, 19045), we study the collisional spin dynamics of two spin-2 Rb atoms confined i…