Key Laboratory of Optical and Magnetic Resonance Spectroscopy,Department of Physics,East China Normal University,Shanghai 200062,China;
Key Laboratory of Optical and Magnetic Resonance Spectroscopy,Department of Physics,East China Normal University,Shanghai 200062,China;
Key Laboratory of Optical and Magnetic Resonance Spectroscopy,Department of Physics,East China Normal University,Shanghai 200062,China;
Heiscnberg XY Z chain,concurrence,magnetic field,intrinsic decoherence;