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quant-ph2025
Quantum channel discrimination against jammers
Kun Fang, Michael X. Cao
We study the problem of quantum channel discrimination between two channels with an adversary input party (a.k.a. a jammer). This setup interpolates between the best-case channel d…
quant-ph2025
Error exponents of quantum state discrimination with composite correlated hypotheses
Kun Fang, Masahito Hayashi
We study the error exponents in quantum hypothesis testing between two sets of quantum states, extending the analysis beyond the independent and identically distributed case to enc…
quant-ph2025
Generalized quantum Chernoff bound
Kun Fang, Masahito Hayashi
We consider the task of distinguishing whether a quantum system is prepared in a state from one of several sets of quantum states. Assuming their convexity and stability under tens…