• Laser & Optoelectronics Progress
  • Vol. 62, Issue 11, 1127015 (2025)
Dongxuan Li1,2, Tao Zhao1,2, Siyao Huang1,2, Mengyao Yang1,2..., Zehong Chang1,2,** and Pei Zhang1,2,*|Show fewer author(s)
Author Affiliations
  • 1Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, Shaanxi , China
  • 2Shaanxi Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, Xi'an 710049, Shaanxi , China
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    DOI: 10.3788/LOP250732 Cite this Article Set citation alerts
    Dongxuan Li, Tao Zhao, Siyao Huang, Mengyao Yang, Zehong Chang, Pei Zhang. Progress and Prospect of Experimental Research on High-Dimensional Quantum Key Distribution (Invited)[J]. Laser & Optoelectronics Progress, 2025, 62(11): 1127015 Copy Citation Text show less

    Abstract

    With the rapid development of quantum algorithms and quantum computers, classical cryptography is facing potential security threats. Quantum key distribution (QKD) has become a core solution to address this challenge as a key technology for information-theoretic security. High-dimensional quantum key distribution (HD-QKD) has rapidly emerged as an important research direction in QKD field with its higher information capacity and stronger noise resilience. In recent years, HD-QKD has been widely applied to various photonic degrees of freedom. This paper reviews the latest developments in HD-QKD technology, emphasizes the experimental achievements of different degrees of freedom in HD-QKD. Additionally, it analyzes the challenges associated with these degrees of freedom and explores the future development directions of HD-QKD.
    ψjϕk2=1d
    ψj,d=0,1,2,,d-1,ϕk,d=j=0d-1expikj2πdψj
    Rd=log2d-HdeZ-HdeX
    RdPM=maxqQμ-feμHdeμ+Δ1log2d-Hde1,0
    Ujk=s=0d-1ωsks+js
    Φjk=s=0d-1ωsk|s,s+j=IUjkΦ00
    qjk=qjk0,qjk1,,qjkd-1
    IE=Hdq10=-q100log2q100-q101log2q101--q10d-1log2q10d-1
    RdEB=log2d-2Hdq10
    q1k0=1-Q, q101==q10d-1=Qd-1
    ΨXn=1d𝓁=-LLexpi2πn𝓁dΨZ𝓁
    Ψ=1nj=0n-1cjeiϕjτj,τj
    Dongxuan Li, Tao Zhao, Siyao Huang, Mengyao Yang, Zehong Chang, Pei Zhang. Progress and Prospect of Experimental Research on High-Dimensional Quantum Key Distribution (Invited)[J]. Laser & Optoelectronics Progress, 2025, 62(11): 1127015
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