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<p>Transmitting quantum information between different nodes in quantum network is one of the central tasks in long-distance quantum communication. We present a protocol for four directional probabilistic controlled teleportation of arbitrary single-qudit states simultaneously from four senders to the four receivers under the controller’s control by using a partially entangled as the quantum channel; then the scheme is generalized to the multidirectional case. It is shown that the fidelity for multidirectional probabilistic controlled teleportation via partially entangled channel can achieve 1 by introducing an auxiliary qubit and performing collective unitary operation on the auxiliary qubit and the entangled particles. Moreover, the effect of noise environment on multidirectional probabilistic controlled teleportation is investigated and the average fidelity for four directional probabilistic controlled teleportation in noise channel is calculated.</p>

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Probabilistic multidirectional controlled teleportation of arbitrary single-qudit states with a partially entangled state

  • 期刊论文

  • 发表日期：

    2025年6月15日

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  • Qi Lan,
  • Shu-Heng Hou,
  • Ping Zhou

摘要

Transmitting quantum information between different nodes in quantum network is one of the central tasks in long-distance quantum communication. We present a protocol for four directional probabilistic controlled teleportation of arbitrary single-qudit states simultaneously from four senders to the four receivers under the controller’s control by using a partially entangled as the quantum channel; then the scheme is generalized to the multidirectional case. It is shown that the fidelity for multidirectional probabilistic controlled teleportation via partially entangled channel can achieve 1 by introducing an auxiliary qubit and performing collective unitary operation on the auxiliary qubit and the entangled particles. Moreover, the effect of noise environment on multidirectional probabilistic controlled teleportation is investigated and the average fidelity for four directional probabilistic controlled teleportation in noise channel is calculated.