17 citations · 62 across the 22 of their papers we have counts for
8 papers · 1 filter
Correlated Entropic Uncertainty as a Signature of Exceptional Points
Kyu-Won Park, Soojoon Lee, Kabgyun Jeong
Non-Hermitian physics has become a fundamental framework for understanding open systems where gain and loss play essential roles, with impact across photonics, quantum science, and…
Singularity Selector: Topological Chirality via Non-Abelian Loops around Exceptional Points
Kyu-Won Park, KyeongRo Kim, Kabgyun Jeong
Chirality is more than a geometric curiosity; it governs measurable asymmetries across nature, from enantiomer-selective drugs and left-handed fermions in particle physics to hande…
Chaos-controlled switching between entanglement and coherence
Kyu-Won Park, Soojoon Lee, Kabgyun Jeong
Controlling entanglement and coherence is central to quantum information, yet the two resources often exhibit antagonistic trends and are difficult to optimize within a single plat…
Complex Wigner entropy and Fisher control of negativity in an oval quantum billiard
Kyu-Won Park, Jongin Jeong
We develop a complex-entropy framework for Wigner negativity and apply it to avoided crossings in an oval quantum billiard. For a real Wigner function the Gibbs--Shannon functional…
Local Wigner-Mass Maps and Integrated Negativity as Measures of nonclassicality in Quantum Chaotic Billiards
Kyu-won Park, Soojoon Lee, Kabgyun Jeong
The Wigner function is a phase space quasi-probability distribution whose negative regions provide a direct, local signature of nonclassicality. To identify where phase-sensitive s…
Information-theoretic analysis of complex eigenmodes across avoided crossings in open microcavities
Kyu-Won Park, Soojoon Lee, Kabgyun Jeong
Avoided crossings (ACs) are hallmark signatures of mode interaction in quantum and wave systems. Open microcavities whose resonances are naturally described as quasi-normal modes (…
Hidden quantum-classical correspondence in chaotic billiards revealed by mutual information
Kyu-Won Park, Soojoon Lee, Kabgyun Jeong
Avoided level crossings, commonly associated with quantum chaos, are typically interpreted as signatures of eigenstate hybridization and spatial delocalization, often viewed as erg…
Topological Switching via Exceptional Point Pairs in an Optical Microcavity Laser
Kyu-Won Park, KyeongRo Kim, Jinuk Kim +2
Conventional mode switching mechanisms, which rely on dynamically encircling exceptional points (EPs) through non-adiabatic transitions (NATs), suffer from intrinsic nonlinear dyna…