Abstract
Quantum discord, as a kind of measurement of quantum correlation, has received much attention since it was introduced. This paper focuses on studying quantum discord in three-spin XXZ chain with three-spin interaction. The effects of all kinds of parameters on quantum discord in the ferromagnetic region J=−1 are studied. The three-spin interaction may increase the value of quantum discord between two spins, while the anisotropy may decrease the value. In addition, the regrowth of quantum discord with temperature is found in the model. For zero temperature, quantum phase transition is existent.
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References
Ollivier H, Zurek W H. Quantum discord: A measure of the quantumness of correlations. Phys Rev Lett, 2001, 88: 017901
Animesh D, Anil S, Carlton M C. Quantum discord and the power of one qubit. Phys Rev Lett, 2008, 100: 050502
Lanyon B P, Barbieri M, Almeida M P, et al. Experimental quantum computing without entanglement. Phys Rev Lett, 2008, 101: 200501
Ma X S, Ren M F, Zhao G X, et al. Effect of decoherence from a spin environment on the entanglement dynamics of two-qutrit states. Sci China-Phys Mech Astron, 2011, 54(10): 1833–1838
Guo K T, Liang M C, Xu H Y, et al. Entanglement in a two-spin (1/2, 3/2) mixed-spin Heisenberg XX chain with an inhomogeneous external magnetic field. Sci China-Phys Mech Astron, 2011, 54(3): 491–495
Kane B E. A silicon-based nuclear spin quantum computer. Nature, 1998, 393: 133–137
Vrijen R, Yablonovitch E, Wang K, et al. Electron-spin-resonance transistors for quantum computing in silicon-germanium heterostructures. Phys Rev A, 2000, 62: 012306
Sorensen A, Molmer K. Spin-spin interaction and spin squeezing in an optical lattice. Phys Rev Lett, 1999, 83: 2274–2277
Lidar D A, Bacon D, Whaley K B. Concatenating decoherence-free subspaces with quantum error correcting codes. Phys Rev Lett, 1999, 82: 4556–4559
Xu J S, Xu X Y, Li C F, et al. Experimental investigation of classical and quantum correlations under decoherence. Nat Commun, 2010, 1: 7
Fanchini F F, Castelano L K, Caldeira A O. Entanglement versus quantum discord in two coupled double quantum dots. New J Phys, 2010, 12: 073009
Soares-Pinto D O, Céleri L C, Auccaise R, et al. Nonclassical correlation in NMR quadrupolar systems. Phys Rev A, 2010, 81: 062118
Werlang T, Gustavo R. Thermal and magnetic quantum discord in Heisenberg models. Phys Rev A, 2010, 81: 044101
Werlang T, Trippe C, Ribeiro G A P, et al. Quantum correlations in spin chains at finite temperatures and quantum phase transitions. Phys Rev Lett, 2010, 105: 095702
Shunlong L. Quantum discord for two-qubit systems. Phys Rev A, 2008, 77: 042303
Mazhar A, Rau A R P, Alber G. Quantum discord for two-qubit X states. Phys Rev A, 2010, 81: 042105
Rigolin G. Thermal entanglement in the two-qubit Heisenberg XYZ model. Int J Quantum Inf, 2004, 2: 393–406
Maziero J, Guzman H C, Celeri L C, et al. Quantum and classical thermal correlations in the XY spin-1/2 chain. Phys Rev A, 2010, 82: 012106
Zhang Y, Long G L. Ground-state and thermal entanglement in three-spin Heisenberg-XXZ chain with three-spin interaction. Commun Theor Phys, 2007, 48: 249–254
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Yue, H., Zhang, Y. & Gong, J. Quantum discord in three-spin XXZ chain with three-spin interaction. Sci. China Phys. Mech. Astron. 55, 1641–1645 (2012). https://doi.org/10.1007/s11433-012-4800-z
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DOI: https://doi.org/10.1007/s11433-012-4800-z