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quant-ph2026
Decoy-state optical quantum information processing with coherent states
Wenyuan Wang, H. F. Chau
Photonic qubits play an important role in quantum information processing. However, to date, efficient high-speed single photon sources and photon number resolving (PNR) detectors a…
quant-ph2025
Quantum Speed Limits For Open System Dynamics Based On A Representation-Basis-Dependent -Seminorm
H. F. Chau, Jinjie Li
We report a family of quantum speed limits (QSLs) that give evolution time lower bounds between an initial and a final state whose separation is described by a certain representati…
quant-ph2024
Fully Passive Quantum Conference Key Agreement
Jinjie Li, Wenyuan Wang, H. F. Chau
Quantum Conference Key Agreement (CKA) provides a secure method for multi-party communication. A recently developed interference-based prepare-and-measure quantum CKA possesses the…