164 citations · 621 across the 21 of their papers we have counts for
21 papers
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…
Monogamy relation in multipartite continuous-variable quantum teleportation
Jaehak Lee, Se-Wan Ji, Jiyong Park +1
Quantum teleportation (QT) is a fundamentally remarkable communication protocol that also finds many important applications for quantum informatics. Given a quantum entangled resou…
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…