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<p>This paper introduces a theoretical framework for asymmetric quad-directional controlled quantum teleportation (AQDCQT), offering a novel approach to simultaneous quantum state transmission among four users. In this protocol, any of the four users can concurrently transmit their entangled state to others, facilitated by a supervisory controller, utilizing a network of 29 qubits as the quantum channel. Quad-directional teleportation enables all four users to act simultaneously as both sender and receiver. Using the IBM Quantum platform, the quantum channel is implemented in practice. The protocol leverages Bell state measurement (BSM), GHZ state measurement (GHZ), and single-qubit measurement (SQM) for efficient quantum state teleportation. Regarding security, we address communication security measures against two potential attacks. The comparative analysis demonstrates the superior intrinsic efficiency of the proposed scheme when compared to previous approaches. Furthermore, we examine the impact of environmental noise on the channel, revealing that the protocol’s fidelity is influenced by the initial state's amplitude coefficient and the noise intensity.</p>

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Asymmetric quad-directional controlled quantum teleportation in noisy environment

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Simranjot Kaur,
  • Savita Gill

摘要

This paper introduces a theoretical framework for asymmetric quad-directional controlled quantum teleportation (AQDCQT), offering a novel approach to simultaneous quantum state transmission among four users. In this protocol, any of the four users can concurrently transmit their entangled state to others, facilitated by a supervisory controller, utilizing a network of 29 qubits as the quantum channel. Quad-directional teleportation enables all four users to act simultaneously as both sender and receiver. Using the IBM Quantum platform, the quantum channel is implemented in practice. The protocol leverages Bell state measurement (BSM), GHZ state measurement (GHZ), and single-qubit measurement (SQM) for efficient quantum state teleportation. Regarding security, we address communication security measures against two potential attacks. The comparative analysis demonstrates the superior intrinsic efficiency of the proposed scheme when compared to previous approaches. Furthermore, we examine the impact of environmental noise on the channel, revealing that the protocol’s fidelity is influenced by the initial state's amplitude coefficient and the noise intensity.