Entanglement control in an anisotropic two-qubit Heisenberg XYZ model with external magnetic fields

Journal Article · Wed Nov 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.052105· OSTI ID:20974684

Abliz, Ahmad ^[1]; Gao, H J; Liu, W M ^[1]; Xie, X C ^[1]; Wu, Y S ^[2]

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1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
2. Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)

We study the bipartite entanglement dynamics in an anisotropic two-qubit Heisenberg XYZ model under the influence of population relaxation and in the presence of various types of magnetic fields. We find that the maximal value of the concurrence has an intrinsic rigidity for the different external magnetic fields. Moreover, our results demonstrate that it is possible to produce entangled states and to control or to modulate the concurrence within the intrinsic maximal value with the help of external time-varying fields despite the existence of dissipation.

• OSTI ID: 20974684
• Journal Information: Physical Review. A, Vol. 74, Issue 5; Other Information: DOI: 10.1103/PhysRevA.74.052105; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
HEISENBERG MODEL
MAGNETIC FIELDS
QUANTUM COMPUTERS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
QUBITS
RELAXATION