High-Dimensional Quantum Cryptography with Hybrid Orbital-Angular-Momentum States through 25 km of Ring-Core Fiber: A Proof-of-Concept Demonstration
High-Dimensional Quantum Cryptography with Hybrid Orbital-Angular-Momentum States through 25 km of Ring-Core Fiber: A Proof-of-Concept Demonstration
复制标题
通过 25 公里环芯光纤实现混合轨道角动量态的高维量子密码学:概念验证演示
DOI:
10.1103/physrevapplied.15.064034
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发表时间:
2021-06
影响因子:
4.6
通讯作者:
Jian Wang
中科院分区:
文献类型:
--
作者:
Qian-Ke Wang;Fang-Xiang Wang;Jun Liu;Wei Chen;Zheng-Fu Han;Andrew Forbes;Jian Wang
Quantum cryptography provides the inherent security for transmitting confidential information across free space or a fiber link. However, a high secure-key rate is still a challenge for a quantum-cryptography system. High-dimensional quantum cryptography, which can tolerate much higher channel noise, is a prospective way to share a higher secure-key rate between legitimate users, and has received substantial attention over the last decade. In particular, orbital angular momentum (OAM) can provide an abundant resource for high-dimensional quantum cryptography. Furthermore, combining spin angular momentum (SAM) with OAM can increase the encoding alphabet. Here we verify a prepare-and-measure quantum-cryptography scheme based on four-dimensional SAM-OAM hybrid states over kilometer-scale ring-core fibers. The measured quantum-bit error rates are $4.3\mathrm{%}$ for 4 km of fiber and $16.3\mathrm{%}$ for 25 km of fiber. The scheme simplifies the process of state preparation and measurement, with a compact and scalable setup.
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影响因子:
4.6
作者:
Wang Fang-Xiang;Chen Wei;Yin Zhen-Qiang;Wang Shuang;Guo Guang-Can;Han Zheng-Fu
通讯作者:
Han Zheng-Fu
影响因子:
2.9
作者:
McLaren, Melanie;Konrad, Thomas;Forbes, Andrew
通讯作者:
Forbes, Andrew
影响因子:
3.3
作者:
Mirhosseini, Mohammad;Magana-Loaiza, Omar S.;Boyd, Robert W.
通讯作者:
Boyd, Robert W.
影响因子:
8.6
作者:
Cerf, NJ;Bourennane, M;Gisin, N
通讯作者:
Gisin, N
影响因子:
10.4
作者:
Gregg, P.;Kristensen, P.;Ramachandran, S.
通讯作者:
Ramachandran, S.