26 citations · 214 across the 43 of their papers we have counts for
5 papers · 1 filter
Opposite amplitude phase entropy responses at a non Hermitian avoided crossing
Kyu-Won Park, Soojoon Lee, Kabgyun Jeong
Avoided crossings (A.C.) in open resonators arise from non-Hermitian mode interaction, where leakage produces complex spectra and biorthogonal eigenmodes. Intensity-based entropies…
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…
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…
Decomposed entropy and estimation of output power in deformed microcavity lasers
Kyu-Won Park, Kwon-Wook Son, Chang-Hyun Ju +1
Park et al. [Phys. Rev. A 106, L031504 (2022)] showed that the Shannon entropy of the probability distribution of a single random variable for far-field profiles (FFPs) in deformed…
Entropic measure of directional emissions in microcavity lasers
Kyu-Won Park, Chang-Hyun Ju, Kabgyun Jeong
We propose a noble notion of the directional emission in microcavity lasers. First, Shannon entropy of the far-field profiles in the polar coordinate can quantify the degree of uni…