Hao-Chung Cheng

activity

20232026

most citedCollectively induced transparency and absorption in waveguide QED with Bragg atom arrays

3 citations · 6 across the 11 of their papers we have counts for

collaborators

Showing 2026Show all

3 papers · 1 filter

math.NT2026

On the geometry of the second Lagrange spectra

Hao Cheng, Harold Erazo, Carlos Gustavo Moreira +1

The Lagrange spectrum $L$ is the set of finite values of the best approximation constants $k (α) = lim sup_{∣ p ∣, ∣ q ∣ \to \infty} ∣ q (q α - p) ∣^{- 1}$ , where $α\in \mathbb{R}\setminus \mathbb{…

quant-ph2026

A Mirror-Descent Algorithm for Computing the Petz-Rényi Capacity of Classical-Quantum Channels

Yu-Hong Lai, Hao-Chung Cheng

We study the computation of the $α$ -Rényi capacity of a classical-quantum (c-q) channel for $α \in (0, 1)$ . We propose an exponentiated-gradient (mirror descent) iteration that genera…

quant-ph2026

Adversarial Hypothesis Testing for Quantum Channels

Masahito Hayashi, Hao-Chung Cheng, Li Gao

This paper presents a systematic study of adversarial hypothesis testing for both quantum-quantum (QQ) and classical-quantum (CQ) channels. Unlike conventional channel discriminati…