Disentanglement from spin environment: Role of multisite interaction

Journal Article · Thu Apr 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.044304· OSTI ID:21408746

Cheng, W W ^[1]; Liu, J -M ^[1]

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1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)

The dynamical entanglement of two spin-qubits coupled to an XY spin-chain with a three-site interaction environment is studied. The dynamical process of disentanglement is numerically and analytically investigated. In the strong-coupling region, the three-site interaction can dramatically accelerate the decay of the entanglement between the two spin-qubits. However, in the weak-coupling region, the role of this interaction in the process of disentanglement depends on the strength of the three-site interaction; for example, in some specific intervals, this interaction can remarkably delay the process of disentanglement.

• OSTI ID: 21408746
• Journal Information: Physical Review. A, Vol. 81, Issue 4; Other Information: DOI: 10.1103/PhysRevA.81.044304; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COUPLING
ENVIRONMENT
INTERACTIONS
QUANTUM ENTANGLEMENT
QUBITS
SPIN
ANGULAR MOMENTUM
INFORMATION
PARTICLE PROPERTIES
QUANTUM INFORMATION