5 papers
Correlation Geometry of Quantum Sensor Networks: Local-Global Information Flow and Local Privacy
Gong-Chu Li, Lei Chen, Xu-Song Hong +7
Quantum sensor networks (QSN) typically encode N unknown parameters while targeting a single linear combination, rendering the N-1 remaining parameters as nuisance directions. To r…
Informationally Complete Distributed Metrology Without a Shared Reference Frame
Hua-Qing Xu, Gong-Chu Li, Xu-Song Hong +6
In quantum information processing, implementing arbitrary preparations and measurements on qubits necessitates precise information to identify a specific reference frame (RF). In s…
Invested and Potential Magic Resources in Measurement-Based Quantum Computation
Gongchu Li, Lei Chen, Si-Qi Zhang +8
Magic states and magic gates are crucial for achieving universal quantum computation, but important questions about how magic resources should be implemented to attain maximal quan…
Nonlinear Enhancement of Measurement Precision via a Hybrid Quantum Switch
Lei Chen, Yu-Xiang Yang, Gong-Chu Li +8
Quantum metrology promises measurement precision beyond the classical limit by using suitably tailored quantum states and detection strategies. However, scaling up this advantage i…
Experimental Verification of Entangled States in the Adversarial Scenario
Wen-Hao Zhang, Zihao Li, Gong-Chu Li +5
Efficient verification of entangled states is crucial to many applications in quantum information processing. However, the effectiveness of standard quantum state verification (QSV…