1.8k citations · 10k across the 145 of their papers we have counts for
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The finite key effect of side-channel-secure quantum key distribution beyond post-selection technique
Cong Jiang, Zong-Wen Yu, Xiang-Bin Wang
By applying the framework of entropic uncertainty relation (EUR) and the Quantum Leftover Hash Lemma (QLHL), we introduce a security-proof method for variable-length side-channel-s…
Tensor Network decoding under inter-qubit correlated errors
Yue Yan, SiYing Wang, ZhiXin Xia +3
The maximum likelihood decoder based on tensor networks has proven highly successful for the 2D surface code, achieving the optimal decoding success rate. However, existing tensor…
1-Mbps Twin-Field Quantum Key Distribution over 200 km Using Independent Dissipative Kerr Solitons
Hao Dong, Tian-Jiao Zhang, Yan-Wei Chen +10
Twin-field quantum key distribution (TF-QKD) dramatically enhances the secure key rate (SKR) over inter-city distances through its square-root scaling. Further improvements in aggr…
An exact Error Threshold of Surface Code under Correlated Nearest-Neighbor Errors: A Statistical Mechanical Analysis
SiYing Wang, ZhiXin Xia, Yue Yan +1
The surface code represents a promising candidate for fault-tolerant quantum computation due to its high error threshold and experimental accessibility with nearest-neighbor intera…
The practical issues of side-channel-secure quantum key distribution
Cong Jiang, Xiao-Long Hu, Zong-Wen Yu +2
Quantum Key Distribution (QKD) leverages the principles of quantum mechanics to provide theoretically unconditional security for cryptographic key sharing. However, practical imple…
Channel-loss-independent quantum-enhanced interferometer
Yi-Xin Shen, Zhou-Kai Cao, Jian Leng +1
We propose a channel-loss-independent quantum-enhanced interferometer. In our scheme, the Fisher information for phase difference of weak light from a remote star remains constant…
Symmetry in Multi-Qubit Correlated Noise Errors Enhances Surface Code Thresholds
SiYing Wang, Yue Yan, ZhiXin Xia +1
Surface codes are promising for practical quantum error correction due to their high threshold and experimental feasibility. However, their performance under realistic noise condit…
Experimental Multi-Dimensional Side-Channel-Secure Quantum Key Distribution
Hao Dong, Cong Jiang, Di Ma +8
Quantum key distribution (QKD) theoretically provides unconditional security between remote parties. However, guaranteeing practical security through device characterisation alone…
Warm Start Adaptive-Bias Quantum Approximate Optimization Algorithm
Yunlong Yu, Xiang-Bin Wang, Nic Shannon +1
In the search for quantum advantage in real--world problems, one promising avenue is to use a quantum algorithm to improve on the solution found using an efficient classical algori…
Free-Space Twin-Field Quantum Key Distribution
Yu-Huai Li, Ting Zeng, Min-Yan Wang +22
Twin-field quantum key distribution (TF-QKD) elevates the secure key rate from a linear to a square-root dependence on channel loss while preserving measurement-device-independent…
Independent Optical Frequency Combs Powered 546 km Field Test of Twin-Field Quantum Key Distribution
Lai Zhou, Jinping Lin, Chengfang Ge +11
Owing to its repeater-like rate-loss scaling, twin-field quantum key distribution (TF-QKD) has repeatedly exhibited in laboratory its superiority for secure communication over reco…
Microsatellite-based real-time quantum key distribution
Yang Li, Wen-Qi Cai, Ji-Gang Ren +38
A quantum network provides an infrastructure connecting quantum devices with revolutionary computing, sensing, and communication capabilities. As the best-known application of a qu…
Piecemeal Telescope Array: Exponential Precision with Strong Robustness and High Efficiency
Jian Leng, Yi-Xin Shen, Zhou-Kai Cao +1
Optical telescopes are powerful eyes for terrestrial and astronomical detection. Here we propose a new detection method with high efficiency, strong robustness and super precision,…
Efficient Quantum Digital Signatures over Long Distances with Likely Bit Strings
Ji-Qian Qin, Zong-Wen Yu, Xiang-Bin Wang
Quantum digital signatures (QDSs) can provide information-theoretic security of messages against forgery and repudiation. Compared with previous QDS protocols that focus on signing…
1002 km Twin-Field Quantum Key Distribution with Finite-Key Analysis
Yang Liu, Wei-Jun Zhang, Cong Jiang +16
Quantum key distribution (QKD) holds the potential to establish secure keys over long distances. The distance of point-to-point QKD secure key distribution is primarily impeded by…
Speeding up the classical simulation of Gaussian boson sampling with limited connectivity
Tian-Yu Yang, Xiang-Bin Wang
Gaussian Boson sampling (GBS) plays a crucially important role in demonstrating quantum advantage. As a major imperfection, the limited connectivity of the linear optical network w…
Twin-field quantum key distribution with local frequency reference
Jiu-Peng Chen, Fei Zhou, Chi Zhang +9
Twin-field quantum key distribution (TF-QKD) overcomes the linear rate-loss limit, which promises a boost of secure key rate over long distance. However, the complexity of eliminat…
Quantum Advantage of Noisy Grover's Algorithm
Jian Leng, Fan Yang, Xiang-Bin Wang
Quantum advantage is the core of quantum computing. Grover's search algorithm is the only quantum algorithm with proven advantage to any possible classical search algorithm. Howeve…
Modifying -qubit controlled- gate to be -qubit Toffoli gate
Jian Leng, Fan Yang, Xiang-Bin Wang
The decomposition for controlled- gate in [Phys. Rev. A, 87, 062318 (2013)] has a shallow circuit depth with no ancilla. Here we modify this decomposition to decompose…
Improving D2p Grover's algorithm to reach performance upper bound under phase noise
Jian Leng, Fan Yang, Xiang-Bin Wang
The original Grover's algorithm has a success probability to output a correct solution, while deterministic Grover's algorithms improve the success probability to 100%. However, th…
Side-channel-secure quantum key distribution
Cong Jiang, Xiao-Long Hu, Zong-Wen Yu +1
We present a result of side-channel-secure (SCS) quantum key distribution (QKD) under fully realistic conditions. Our result is not only measurement-device independent but also eff…
Experimental Twin-Field Quantum Key Distribution Over 1000 km Fiber Distance
Yang Liu, Wei-Jun Zhang, Cong Jiang +15
Quantum key distribution (QKD) aims to generate secure private keys shared by two remote parties. With its security being protected by principles of quantum mechanics, some technol…
Twin-field quantum key distribution without phase locking
Wei Li, Likang Zhang, Yichen Lu +11
Twin-field quantum key distribution (TF-QKD) has emerged as a promising solution for practical quantum communication over long-haul fiber. However, previous demonstrations on TF-QK…
Solution of SAT Problems with the Adaptive-Bias Quantum Approximate Optimization Algorithm
Yunlong Yu, Chenfeng Cao, Xiang-Bin Wang +2
The quantum approximate optimization algorithm (QAOA) is a promising method for solving certain classical combinatorial optimization problems on near-term quantum devices. When emp…