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Splitting an Arbitrary Three-Qubit State via a Five-Qubit Cluster State and a Bell State.

Gang Xu1,2, Tianai Zhou3, Xiu-Bo Chen3

  • 1School of Information Science and Technology, North China University of Technology, Beijing 100144, China.

Entropy (Basel, Switzerland)
|March 25, 2022
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This study introduces a novel quantum information splitting (QIS) scheme using a five-qubit cluster state. The method enhances efficiency and security for transmitting quantum states, reducing qubit consumption.

Keywords:
bell basis measurementcluster statequantum information splittingsingle-qubit measurement

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Area of Science:

  • Quantum Information Science
  • Quantum Communication Protocols
  • Quantum Cryptography

Background:

  • Quantum information splitting (QIS) enables secure transmission of quantum states via classical and quantum channels.
  • Existing QIS schemes often require complex multi-particle joint measurements.

Purpose of the Study:

  • To propose a new, efficient, and secure QIS scheme.
  • To simplify the operational requirements for quantum information splitting.

Main Methods:

  • Utilizes a five-qubit cluster state and a Bell state.
  • Employs sequential Bell basis measurements and single-qubit measurements.
  • Information recovery involves local unitary operations.

Main Results:

  • Successfully splits and transmits an unknown three-qubit quantum state to two agents.
  • Achieves QIS through simpler operations than multi-particle joint measurements.
  • Demonstrates improved efficiency and reduced qubit consumption compared to prior schemes.

Conclusions:

  • The proposed scheme offers a practical and efficient approach to quantum information splitting.
  • The protocol is resilient against both external eavesdropping and internal participant attacks.
  • This work contributes to the advancement of secure quantum communication.