42 citations · 82 across the 14 of their papers we have counts for
14 papers
Joint control of coherent transmission, reflection, and absorption
Shiyu Li, Dongha Kim, Shanhui Fan +1
Controlling multiple wave properties simultaneously poses a key challenge in coherent control of wave transport. We present a theory for joint coherent control of transmission, ref…
Generating topological non-diffracting beams using high quality factor nonlocal metasurfaces
Dongha Kim, Charles Pelzman, Cheng Guo +3
Non-diffracting optical beams are essential tools in photonics, enabling robust light transport, super-resolution imaging, and spatiotemporal control. While nonlocal metasurfaces h…
Roadmap on Nonlocality in Photonic Materials and Metamaterials
Francesco Monticone, N. Asger Mortensen, Antonio I. Fernández-Domínguez +63
Photonic technologies continue to drive the quest for new optical materials with unprecedented responses. A major frontier in this field is the exploration of nonlocal (spatially d…
Ultrafast space-time optical merons in momentum-energy space
Murat Yessenov, Ahmed H. Dorrah, Cheng Guo +7
Skyrmions, topologically non-trivial localized spin structures, are fertile ground for exploring emergent phenomena in condensed matter physics and next-generation magnetic-memory…
Spatiotemporal steering of non-diffracting wavepackets
Haiwen Wang, Cheng Guo, Shanhui Fan
We study the dynamics of space-time non-diffracting wavepackets, commonly known as light bullets, in a spatiotemporally varying medium. We show that by spatiotemporal refraction, a…
Dynamic realization of emergent high-dimensional optical vortices
Dongha Kim, Geonhyeong Park, Yun-Seok Choi +9
The dimensionality of vortical structures has recently been extended beyond two dimensions, providing higher-order topological characteristics and robustness for high-capacity info…
Passivity constraints on the relations between transmission, reflection, and absorption eigenvalues
Cheng Guo, Shanhui Fan
We investigate the passivity constraints on the relations between transmission, reflection, and absorption eigenvalues in linear time-invariant systems. Using techniques from matri…
Shaping space-time wavepackets beyond the paraxial limit using a dispersion magnifier
Dongha Kim, Cheng Guo, Peter B. Catrysse +1
Space-time wavepackets (STWPs) have received significant attention since they can propagate in free space at arbitrary group velocity without dispersion and diffraction. However, a…
Transport measurements of majorization order for wave coherence
Cheng Guo, David A. B. Miller, Shanhui Fan
We investigate the majorization order for comparing wave coherence and reveal its fundamental consequences in transport measurements, including power distribution, absorption, tran…
Unitary control of partially coherent waves. II. Transmission or reflection
Cheng Guo, Shanhui Fan
Coherent control of wave transmission and reflection is crucial for applications in communication, imaging, and sensing. However, many practical scenarios involve partially coheren…
Unitary control of partially coherent waves. I. Absorption
Cheng Guo, Shanhui Fan
The coherent control of wave absorption has important applications in areas such as energy harvesting, imaging, and sensing. However, most practical scenarios involve the absorptio…
Unitary control of multiport wave transmission
Cheng Guo, David A. B. Miller, Shanhui Fan
Controlling wave transmission is crucial for various applications. In this work, we apply the concept of unitary control to manipulate multiport wave transmission. Unitary control…
Topological winding guaranteed coherent orthogonal scattering
Cheng Guo, Shanhui Fan
Coherent control has enabled various novel phenomena in wave scattering. We introduce an effect called coherent orthogonal scattering, where the output wave becomes orthogonal to t…
Winding number criterion for the origin to belong to the numerical range of a matrix on a loop of matrices
Cheng Guo, Shanhui Fan
Let be continuous with , thus the winding number of is well-defined. If the winding number is not divisible by , then the origi…