Eigenfunctions of Five-Qubit XX Chain and Ground State Concurrence

• 来源期刊: 理论物理通讯(英文版)
• 年，卷（期）: 2008,（12）
• 页码范围: 1295-1298
• 页数: 4页
• 语种: 英文

摘要

Use Jordan-Wigner transformation the eigenstates and eigenenergies of five qubits XX chain including external magnetic field are obtained. The concurrences Co,1 and C0,2 of ground state are obtained. For the ferromagnetic,when [((√)5-1)/2]|J|<B≤|J|, the values of C0,1 and C0,2 are the same. The C0,2 is easily broken by temperature.