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Thermal entanglement of spins in an inhomogeneous magnetic field

Asoudeh, M ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.71.022308
  3. Publisher: American Physical Society , 2005
  4. Abstract:
  5. We study the effect of inhomogeneities in the magnetic field on the thermal entanglement of a two-spin system. We show that in the ferromagnetic case a very small inhomogeneity is capable of producing large values of thermal entanglement. This shows that the absence of entanglement in the ferromagnetic Heisenberg system is highly unstable against inhomogeneity of magnetic fields, which is inevitably present in any solid state realization of qubits. © 2005 The American Physical Society
  6. Keywords:
  7. Ferromagnetic materials ; Thermal effects ; Qubits ; Solid state realization ; Thermal entanglement ; Two-spin system ; Magnetic fields
  8. Source: Physical Review A - Atomic, Molecular, and Optical Physics ; Volume 71, Issue 2 , 2005 ; 10502947 (ISSN)
  9. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.71.022308