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

Chin. Phys. Lett.

2007, Vol. 24

Issue (1): 8-10 DOI:

Original Articles

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

LIU Dan^1,2;ZHANG Yong³;LIU Yang^1,2;LONG Gui-Lu^1,2

¹Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics, Tsinghua University, Beijing 100084 ²Tsinghua National Laboratory For Information Science and Technology, Beijing 100084 ³Institute of Physics, School of Sciences, Beijing University of Posts and Telecommunications, Beijing 100876

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LIU Dan, ZHANG Yong, LIU Yang et al 2007 Chin. Phys. Lett. 24 8-10

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Abstract 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.

Keywords: 03.65.Ud 03.67.Mn

Published: 01 January 2007

PACS:	03.65.Ud	(Entanglement and quantum nonlocality)
	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2007/V24/I1/08

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