Entanglement in the Ground State of an Isotropic Three-Qubit Transverse XY Chain with Energy Current

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2007,（1）
• 页码范围: 8-10
• 页数: 3页
• 语种: 英文

摘要

The ground state entanglement in an isotropic three-qubit transverse XY chain with energy current is analysed.A quantum phase transition from a no-energy-current phase to energy-current phase is found when the magnetic field changes. It has also been found that the ground state changes in company with the quantum phase transition.