5 papers
Structured-light-mediated hybrid entanglement between photon polarization and electronic orbital angular momentum
Hiroaki Saito, Nobuhiko Yokoshi
We propose a minimal quantum-optical scheme for generating hybrid entanglement between photon polarization and electronic orbital angular momentum in a semiconductor quantum disk.…
Nonlocal current-response theory of structured-light dichroism
Akihito Kato, Nobuhiko Yokoshi
We develop a nonlocal minimal-coupling theory of structured-light dichroism. Optical absorption is written as a bilinear functional of the incident vector potential and the nonloca…
Optical vortex probe of loop-current chirality in moiré materials
Nobuhiko Yokoshi, Akihito Kato
We propose a symmetry-resolved optical probe of intrinsic loop-current chirality in moiré materials, with twisted bilayer graphene as a representative realization. Interlayer inte…
Effective electron coupling to phonon mechanical angular momentum in helical systems
Akihito Kato, Nobuhiko Yokoshi, Jun-ichiro Kishine
In chiral crystals, two types of phonon angular momenta have been introduced. One is crystal angular momentum (CAM) arising from the rotational or screw-rotational symmetry and the…
Kelvin-Wave-Inspired Optical Vortex Excitation in Kerr Nonlinear Media
Yosuke Minowa, Nobuhiko Yokoshi, Makoto Tsubota
We demonstrate a direct one-to-one correspondence between nonlinear optical fields in defocusing Kerr media and wave functions in weakly interacting Bose-Einstein condensates or qu…