3 papers
quant-ph2026
Completely Bounded Qusi-Norms, Their Mutiplicativity, and New Additivity Results of Quantum Channels
Ke Li, Quanhua Xu
We obtain two new additivity results of quantum channels. The first one is the additivity of the channel Rényi information associated with the sandwiched Rényi divergence of orde…
quant-ph2026
Exponential Analysis for Entanglement Distillation
Zhiwen Lin, Ke Li, Kun Fang
Historically, the focus in entanglement distillation has predominantly been on the distillable entanglement, and the framework assumes complete knowledge of the initial state. In t…
quant-ph2025
Reliability Function of Classical-Quantum Channels
Ke Li, Dong Yang
We study the reliability function of general classical-quantum channels, which describes the optimal exponent of the decay of decoding error when the communication rate is below th…