对角化多体量子，对于参数 L=10， 开放边界条件， h=0.5, h=1.0, h=2.0, 分别：对角化哈密顿量矩阵H, 求得基态能量，第一激发态能量(mutiqubi Quantum registers of nuclear spins coupled to electron spins of individual solid-state defects are a promising platform for quantum information processing)