Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-970, Campinas--SP, Brazil.
J Phys Condens Matter. 2010 Jun 23;22(24):245603. doi: 10.1088/0953-8984/22/24/245603. Epub 2010 Jun 2.
We analyze the developing of bipartite and multipartite entanglement through the Mott insulator-superfluid quantum phase transition. Starting from a Mott insulator state, where a filling factor ν = N/M = 1 per lattice site is considered, we derive an expression for a completely connected graph configuration of bosons and show how bipartite and multipartite entanglement evolve through the phase transition predicted in previous works. We show how, in the transition, bipartite entanglement is distributed through the system respecting monogamous relations.
我们通过莫特绝缘体能带-超流量子相变来分析二分量和多分量纠缠的发展。从填充因子ν=N/M=1 的莫特绝缘体态开始，我们推导出玻色子完全连接图的表达式，并展示了二分量和多分量纠缠如何通过先前工作预测的相变而演化。我们展示了在相变过程中，二分量纠缠是如何通过系统以尊重单一性关系的方式进行分配的。
