4 papers
Operational interpretation of the reverse sandwiched Renyi divergences in composite quantum hypothesis testing
Masahito Hayashi, Kun Fang
We study the Hoeffding regime of composite quantum hypothesis testing, in which each hypothesis is specified by a sequence of sets of quantum states. We establish quantum Hoeffding…
Quantum thermodynamics with uncertain equilibrium
Munan Zhang, Kun Fang
The resource-theoretic approach to quantum thermodynamics typically assumes perfect knowledge of the thermal equilibrium state, an idealization incompatible with finite experimenta…
Geometric optimization for quantum communication
Chengkai Zhu, Hongyu Mao, Kun Fang +1
Determining the ultimate limits of quantum communication, such as the quantum capacity of a channel and the distillable entanglement of a shared state, remains a central challenge…
Towards the ultimate limits of quantum channel discrimination and quantum communication
Kun Fang, Gilad Gour, Xin Wang
Distinguishability is fundamental to information theory and extends naturally to quantum systems. While quantum state discrimination is well understood, quantum channel discriminat…