332 citations · 1.6k across the 27 of their papers we have counts for
7 papers · 1 filter
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…