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Entanglement dynamics of qubits in a common environment

Author

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  • An, Jun-Hong
  • Wang, Shun-Jin
  • Luo, Hong-Gang

Abstract

We use the quantum jump approach to study the entanglement dynamics of a quantum register, which is composed of two or three dipole–dipole coupled two-level atoms, interacting with a common environment. Our investigation of entanglement dynamics reflects that the environment has dual actions on the entanglement of the qubits in the model. While the environment destroys the entanglement induced by the coherent dipole–dipole interactions, it can produce stable entanglement between the qubits prepared initially in a separable state. The analysis shows that it is the entangled decoherence-free states contained as components in the initial state that contribute to the stable entanglement. Our study indicates how the environmental noise produces the entanglement and exposes the interplay of environmental noise and coherent interactions of qubits on the entanglement.

Suggested Citation

  • An, Jun-Hong & Wang, Shun-Jin & Luo, Hong-Gang, 2007. "Entanglement dynamics of qubits in a common environment," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 382(2), pages 753-764.
    • Handle: RePEc:eee:phsmap:v:382:y:2007:i:2:p:753-764
    DOI: 10.1016/j.physa.2007.04.008
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    Cited by:

    1. Motamedifar, M., 2017. "Dynamical pairwise entanglement and two-point correlations in the three-ligand spin-star structure," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 483(C), pages 280-292.
    2. Candice C Howarth & Polyvios Polyviou, 2012. "Sustainable travel behaviour and the widespread impacts on the local economy," Local Economy, London South Bank University, vol. 27(7), pages 764-781, November.

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