104 citations · 525 across the 36 of their papers we have counts for
39 papers
Characterizing universal topological phases beyond spatial embedding
Sunkyu Yu, Xianji Piao, Namkyoo Park
Although Hamiltonians govern wave-matter interactions, conventional characterizations of topological phases of matter require more than the Hamiltonian alone, relying on global inv…
Topological insulators on complex networks
Sunkyu Yu, Xianji Piao, Namkyoo Park
The landscape of topological insulators has expanded beyond its traditional domain of periodic lattices with short-range hopping. Related studies have explored topological phenomen…
Magnetic graphs for cavity quantum electrodynamics
Sunkyu Yu, Xianji Piao, Namkyoo Park
Strengthening light-matter coupling has become a central challenge in cavity quantum electrodynamics (QED), enabling ultrafast gate operations, qubit protection, and deterministic…
Mapping open quantum dynamics onto graphs
Kyuho Kim, Dayeong Lee, Seungkyun Park +3
Graph-theoretic frameworks have been widely employed in quantum physics to address the high-dimensional complexity of quantum systems. Although open quantum dynamics incorporates s…
Induced Directional Switching of Platicon Microcombs in Photonic Crystal Ring Resonators
Erwan Lucas, Su-Peng Yu, Jizhao Zang +1
Microcombs in normal-dispersion photonic crystal ring resonators (PhCRs) are versatile building blocks for next-generation integrated photonic circuits, but their inherent backward…
Multi-objective design of photon blockade for bright single-photon sources
Sunkyu Yu, Xianji Piao, Namkyoo Park
High-quality single-photon sources, realized through saturable emitters, photon blockade, or heralded pair generation, are indispensable building blocks for photonic quantum platfo…
Tailoring Defects in Photonic Time Crystals for Coherent Energy Control
Dayeong Lee, Jongheon Yeo, Gitae Lee +3
Recent advances in time-varying photonics have revealed new degrees of freedom for manipulating optical states, arising from the distinctive nature of the temporal axis: causality…
Topological heavy-tailed networks
Sunkyu Yu, Xianji Piao, Namkyoo Park
Although two-dimensional periodic structures have functioned as the primary platform for exploring topological phenomena, recent advances have substantially expanded this research…
Fully programmable slow light based on a spinor representation of generalized coupled-resonator-induced transparency
Seungkyun Park, Beomjoon Chae, Hyungchul Park +3
Electromagnetically induced transparency (EIT), arising from quantum interference in coherently driven atomic systems, has inspired a variety of photonic analogues, such as coupled…
Non-Hermitian stealthy hyperuniformity
Gitae Lee, Seungmok Youn, Ikbeom Lee +5
Symmetry-driven wave physics in open systems, exemplified by parity-time (PT) symmetry, has extended the landscape of crystalline phases in materials science to include gain-loss m…
Hypergraph modelling of wave scattering to speed-up material design
Kunwoo Park, Ikbeom Lee, Seungmok Youn +3
Hypergraphs offer a generalized framework for understanding complex systems, covering group interactions of different orders beyond traditional pairwise interactions. This modellin…
Heavy-tailed open quantum systems reveal long-lived and ultrasensitive coherence
Sunkyu Yu, Xianji Piao, Namkyoo Park
Understanding random open quantum systems is critical for characterizing the performance of large-scale quantum devices and exploring macroscopic quantum phenomena. Various feature…
Nonlinear unitary circuits for photonic neural networks
Sunkyu Yu, Xianji Piao, Namkyoo Park
Photonics has unlocked the potential for energy-efficient acceleration of deep learning. Most approaches toward photonic deep learning have diligently reproduced traditional deep l…
Programmable photonic unitary circuits for light computing
Kyuho Kim, Kunwoo Park, Hyungchul Park +3
Unitarity serves as a fundamental concept for characterizing linear and conservative wave phenomena in both classical and quantum systems. Developing platforms that perform unitary…
Deep-subwavelength engineering of stealthy hyperuniformity
Jusung Park, Seungkyun Park, Kyuho Kim +3
Light behaviours in disordered materials have been of research interest primarily at length scales beyond or comparable to the wavelength of light, because order and disorder are o…
Programmable lattices for non-Abelian topological photonics and braiding
Gyunghun Kim, Jensen Li, Xianji Piao +2
Non-Abelian physics, originating from noncommutative sequences of operations, unveils novel topological degrees of freedom for advancing band theory and quantum computation. In pho…
Volumetric B1+ field homogenization in 7 Tesla brain MRI using metasurface scattering
Gyoungsub Yoon, Sunkyu Yu, Jongho Lee +1
Ultrahigh field magnetic resonance imaging (UHF MRI) has become an indispensable tool for human brain imaging, offering excellent diagnostic accuracy while avoiding the risks assoc…
Computing Riemann zeros with light scattering
Sunkyu Yu, Xianji Piao, Namkyoo Park
Finding hidden order within disorder is a common interest in material science, wave physics, and mathematics. The Riemann hypothesis, stating the locations of nontrivial zeros of t…
Programmable photonic time circuits for highly scalable universal unitaries
Xianji Piao, Sunkyu Yu, Namkyoo Park
Programmable photonic circuits (PPCs) have garnered substantial interest in achieving deep learning accelerations and universal quantum computations. Although photonic computation…
Unidirectional scattering with spatial homogeneity using photonic time disorder
Jungmin Kim, Dayeong Lee, Sunkyu Yu +1
The temporal degree of freedom in photonics has been a recent research hotspot due to its analogy with spatial axes, causality, and open-system characteristics. In particular, the…
Heavy tails and pruning in programmable photonic circuits
Sunkyu Yu, Namkyoo Park
Developing hardware for high-dimensional unitary operators plays a vital role in implementing quantum computations and deep learning accelerations. Programmable photonic circuits a…
Machine learning identifies scale-free properties in disordered materials
Sunkyu Yu, Xianji Piao, Namkyoo Park
The vast amount of design freedom in disordered systems expands the parameter space for signal processing, allowing for unique signal flows that are distinguished from those in reg…
Topological protection in nonlinear optical dynamics with parity-time symmetry
Sunkyu Yu, Xianji Piao, Namkyoo Park
Topological phases exhibit properties that are conserved for continuous deformations, as demonstrated in topological protections in condensed-matter physics and electromagnetic wav…
Topological hyperbolic lattices
Sunkyu Yu, Xianji Piao, Namkyoo Park
Non-Euclidean geometry, discovered by negating Euclid's parallel postulate, has been of considerable interest in mathematics and related fields for the description of geographical…