Photonics – Energy, Information, Material
Loretnz reciprocity is known to impose constraints on transmission, absorption, and emission. We reveal reciprocity constraints on reflection.
We study the relation between angular spectral absorptivity and emissivity for any thermal emitter using Shubnikov groups.
We provide a unified theory of reciprocity, energy conservation, and time-reversal symmetry from the perspective of internal symmetry.
We generate guided space-time wave packets in a multimode waveguide using multilevel interband photonic transitions.
We generate 3D linear light bullets propagating in free space using a single passive nonlocal optical surface.
We propose a wavelength-tunable narrow-band thermal emitters over a wide wavelength range based on the Moiré effect.
We demonstrate a radiative thermal router based on magnetic Weyl semimetals.
We design an optical device that can replace free space of much larger thickness.
We study the constraints on reciprocal and non-reciprocal many-body radiative heat transfer imposed by symmetry and the second law of thermodynamics.
We design a compact optical isolator using magnetic Weyl semimetals.
We design a nonreciprocal thermal emitter based on magnetic Weyl semimetals, which can strongly violate Kirchhoff's law without external magetic fields.
We show that a momentum-space meron spin texture for electromagnetic fields in free space can be generated by controlling the interaction of light with a photonic crystal slab having a nonzero Berry curvature.
We study the relation between photon thermal Hall effect and the persistent heat current in radiative heat transfer.
We show that several types of isotropic image filters in the wavevector domain can be implemented with a single photonic crystal slab device.
We report enhanced non-perturbative highharmonic emission from a Fano-resonant Si metasurface.
We implement isotropic optical edge detection with a photonic crystal slab device.
