Quantum teleportation with partially entangled states via noisy channels

  • Authors:

  • Hua-Qiu Liang;Jin-Ming Liu;Shang-Shen Feng;Ji-Gen Chen

  • Affiliations:

  • Department of Physics and Materials Engineering, College of Physics and Electronic Engineering, Taizhou University, Taizhou, China 318000;State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai, China 200062;Department of Physics and Materials Engineering, College of Physics and Electronic Engineering, Taizhou University, Taizhou, China 318000;Department of Physics and Materials Engineering, College of Physics and Electronic Engineering, Taizhou University, Taizhou, China 318000

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

Using a partially entangled EPR-type state as quantum channel, we investigate quantum teleportation (QT) of a qubit state in noisy environments by solving the master equation in the Lindblad form. We analyze the different influence for the partially entangled EPR-type channel and the EPR channel on the fidelity and the average fidelity of the QT process in the presence of Pauli noises. It is found that the fidelity depends on the type and the strength of the noise, and the initial state to be teleported. Moreover, the EPR channel is more robust than the partially entangled EPR-type channel against the influence of the noises. It is also found that the partially entangled EPR-type channel enables the average fidelity as a function of the decoherence parameter $$kt$$ to decay with different velocities for different Pauli noises.