3 papers
cs.IT2026
Algorithms for Computing the Petz-Augustin Capacity
Chun-Neng Chu, Wei-Fu Tseng, Yen-Huan Li
We propose the first algorithms with non-asymptotic convergence guarantees for computing the Petz-Augustin capacity, which generalizes the channel capacity and characterizes the op…
quant-ph2025
A Linearly Convergent Algorithm for Computing the Petz-Augustin Mean
Chun-Neng Chu, Wei-Fu Tseng, Yen-Huan Li
We study the computation of the Petz-Augustin mean of order , defined as the minimizer of a weighted sum of Petz-Rényi divergences of order o…
quant-ph2025
Online Learning Quantum States with the Logarithmic Loss via VB-FTRL
Wei-Fu Tseng, Kai-Chun Chen, Zi-Hong Xiao +1
Online learning of quantum states with the logarithmic loss (LL-OLQS) is a quantum generalization of online portfolio selection (OPS), a classic open problem in online learning for…