Special Topic: Quantum Information
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Polarization self-compensation quantum key distribution system with 5 GHz modulation
Hao, Peng-Lei; Chen, Wei; Wang, Shuang; Yin, Zhen-Qiang; He, De-Yong; Wang, Fang-Xiang; Liu, Shu-Feng; Zhou, Sheng; Wang, Yu; Guo, Guang-Can; Han, Zheng-Fu
Sci China Inf Sci, 2026, 69(8): 180501
Keywords: quantum key distribution; adaptive polarization compensation; InGaAs/InP SPAD; 5 GHz modulation; time- and wavelength-division multiplexing
Cite as: Hao P-L, Chen W, Wang S, et al. Polarization self-compensation quantum key distribution system with 5 GHz modulation. Sci China Inf Sci, 2026, 69: 180501, doi: 10.1007/s11432-025-4933-9
Special Topic: Quantum Information
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Scalable and highly fault-tolerant circular quantum Byzantine agreement
Weng, Chen-Xun; Li, Ming-Yang; Li, Shi-Gen; Zhu, Mengya; Sun, Xiao-Ran; Yin, Hua-Lei; Chen, Zeng-Bing
Sci China Inf Sci, 2026, 69(8): 180502
Keywords: quantum Byzantine agreement; quantum blockchain; semi-decentralized; high fault-tolerance; polynomial communication complexity; blockchain trilemma
Cite as: Weng C-X, Li M-Y, Li S-G, et al. Scalable and highly fault-tolerant circular quantum Byzantine agreement. Sci China Inf Sci, 2026, 69: 180502, doi: 10.1007/s11432-026-4996-4
Special Topic: Quantum Information
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Keywords: continuous-variable system; network nonlocality; Bell-type inequality; Gaussian states; generalized quasiprobability function
Cite as: Yan T T, Hou J C, Qi X F, et al. Witnessing nonlocality in quantum networks of continuous-variable systems by generalized quasiprobability functions. Sci China Inf Sci, 2026, 69: 180503, doi: 10.1007/s11432-025-4753-8
Special Topic: Quantum Information
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Q-Tag: watermarking quantum circuit generative models
Yang Y, Long Y Z, Fang H, et al
Sci China Inf Sci, 2026, 69(8): 180504
Keywords: quantum circuit; IP protection; latent diffusion model; quantum circuit generative models; watermarking
Cite as: Yang Y, Long Y Z, Fang H, et al. Q-Tag: watermarking quantum circuit generative models. Sci China Inf Sci, 2026, 69: 180504, doi: 10.1007/s11432-025-5016-2
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Deterministic distribution of Gaussian entanglement and quantum steering through fiber channels
Yan, Yanru; Ren, Siyu; Zhao, Mengyu; Han, Dongmei; Li, Yalin; Wang, Meihong; Su, Xiaolong
Sci China Inf Sci, 2026, 69(8): 180505
Keywords: quantum entanglement; quantum steering; distribution; fiber channel; continuous-variable
Cite as: Yan Y R, Ren S Y, Zhao M Y, et al. Deterministic distribution of Gaussian entanglement and quantum steering through fiber channels. Sci China Inf Sci, 2026, 69: 180505, doi: 10.1007/s11432-026-5008-4
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Distributed exact quantum amplitude amplification algorithm for arbitrary quantum states
Zhou, Xu; Tao, Wenxuan; Li, Keren; Zheng, Shenggen
Sci China Inf Sci, 2026, 69(8): 180506
Keywords: noisy intermediate-scale quantum era; distributed quantum computation; quantum amplitude amplification algorithm; mindspore quantum; quantum gate decomposition
Cite as: Zhou X, Tao W X, Li K R, et al. Distributed exact quantum amplitude amplification algorithm for arbitrary quantum states. Sci China Inf Sci, 2026, 69: 180506, doi: 10.1007/s11432-026-5020-7
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Keywords: quantum cryptanalysis; symmetric cryptography; offline Simon's algorithm; pseudorandom function; classical query; quantum query
Cite as: Zhen X-F, Li Z-Q, Fan J-C, et al. Offline dedicated quantum attacks on block cipher constructions based on two parallel permutation-based pseudorandom functions. Sci China Inf Sci, 2026, 69: 180507, doi: 10.1007/s11432-026-5030-8
Special Topic: Quantum Information
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The correlated matching decoder for the 4.8.8 color code
Liu Y T, Wu J J, Lao L L
Sci China Inf Sci, 2026, 69(8): 180508
Keywords: quantum error correction; error decoding; surface code; color code; matching decoder
Cite as: Liu Y T, Wu J J, Lao L L. The correlated matching decoder for the 4.8.8 color code. Sci China Inf Sci, 2026, 69: 180508, doi: 10.1007/s11432-026-5027-y
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Efficient self-consistent quantum comb tomography on the product Stiefel manifold
He, Xinlin; Li, Zetong; Zheng, Congcong; Li, Sixuan; Yu, Xutao; Qian, Ling; Zhang, Runqing; Huang, Zhiguo; Han, Jize; Zhang, Zaichen
Sci China Inf Sci, 2026, 69(8): 180509
Keywords: quantum comb; tomography; Stiefel manifold; Riemannian optimization; non-Markovian gate set tomography
Cite as: He X L, Li Z T, Zheng C C, et al. Efficient self-consistent quantum comb tomography on the product Stiefel manifold. Sci China Inf Sci, 2026, 69: 180509, doi: 10.1007/s11432-026-5043-8
