Multi-hop quantum teleportation based on HSES via GHZ-like states

doi:10.1088/1674-1056/ad8db0

Abstract Implementing quantum wireless multi-hop network communication is essential to improve the global quantum network system. In this paper, we employ eight-level GHZ states as quantum channels to realize multi-hop quantum communication, and utilize the logical relationship between the measurements of each node to derive the unitary operation performed by the end node. The hierarchical simultaneous entanglement switching (HSES) method is adopted, resulting in a significant reduction in the consumption of classical information compared to multi-hop quantum teleportation (QT) based on general simultaneous entanglement switching (SES). In addition, the proposed protocol is simulated on the IBM Quantum Experiment platform (IBM QE). Then, the data obtained from the experiment are analyzed using quantum state tomography, which verifies the protocol's good fidelity and accuracy. Finally, by calculating fidelity, we analyze the impact of four different types of noise (phase-damping, amplitude-damping, phase-flip and bit-flip) in this protocol.

Keywords: multi-hop quantum teleportation GHZ-like state hierarchical simultaneous entanglement swapping IBM Quantum Experiment platform quantum state tomography

Received: 26 July 2024
Revised: 12 October 2024
Accepted manuscript online: 01 November 2024

PACS:	03.67.Hk	(Quantum communication)
	03.67.Pp	(Quantum error correction and other methods for protection against decoherence)
	03.67.-a	(Quantum information)

Fund: Project supported by the Open Fund of Anhui Key Laboratory of Mine Intelligent Equipment and Technology (Grant No. ZKSYS202204), the Talent Introduction Fund of Anhui University of Science and Technology (Grant No. 2021yjrc34), and the Scientific Research Fund of Anhui Provincial Education Department (Grant No. KJ2020A0301).

Corresponding Authors: Xiao-Long Wei
E-mail: 461242289@qq.com

Cite this article:

She-Xiang Jiang(蒋社想), Xiao-Long Wei(韦晓龙), Jin-Huan Li(李金欢), and Shuai-Shuai Li(李帅帅) Multi-hop quantum teleportation based on HSES via GHZ-like states 2025 Chin. Phys. B 34 010302

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