44 citations · 153 across the 8 of their papers we have counts for
10 papers · 1 filter
Gaussian Optimality of Energy-Constrained One-Shot Communication through Single-Mode Bosonic Gaussian Channels
Se-Wan Ji
We prove Gaussian optimality for the energy-constrained one-shot Holevo capacity of single-mode bosonic Gaussian channels, including phase-sensitive channels with arbitrarily squee…
Difference-Set Weyl Channels: Exact Capacity, Optimizer Bifurcation, and Scalable Entanglement Separation
Se-Wan Ji
In odd local dimension , complete Wigner positivity yields stochastic phase-space dynamics on Wigner-nonnegative states but does not control signed inputs, entanglement across c…
Faithful measure of Quantum non-Gaussianity via quantum relative entropy
Jiyong Park, Jaehak Lee, Kyunghyun Baek +2
We introduce a measure of quantum non-Gaussianity (QNG) for those quantum states not accessible by a mixture of Gaussian states in terms of quantum relative entropy. Specifically,…
Quantifying non-Gaussianity of quantum-state correlation
Jiyong Park, Jaehak Lee, Se-Wan Ji +1
We consider how to quantify non-Gaussianity for the correlation of a bipartite quantum state by using various measures such as relative entropy and geometric distances. We first sh…
Gaussian benchmark for optical communication aiming towards ultimate capacity
Jaehak Lee, Se-Wan Ji, Jiyong Park +1
We establish the fundamental limit of communication capacity within Gaussian schemes under phase-insensitive Gaussian channels, which employ multimode Gaussian states for encoding…
Testing nonclassicality and non-Gaussianity in phase space
Jiyong Park, Junhua Zhang, Jaehak Lee +5
We theoretically propose and experimentally demonstrate a nonclassicality test of single-mode field in phase space, which has an analogy with the nonlocality test proposed by Banas…