Sota Kitamura

TL;DR: In this article, the control of quantum systems using periodic driving is an old concept in condensed matter physics dating back to ideas such as the inverse Faraday effect, but there is no theoretical proof of its feasibility.

TL;DR: In this paper, a high-frequency expansion for periodically driven quantum systems based on the Brillouin-Wigner perturbation theory was constructed, which generates an effective Hamiltonian on the projected zero-photon subspace in the Floquet theory, reproducing the quasienergies and eigenstates of the original Floquet Hamiltonian up to desired order in $1/ √ √ ϵ, with ϵ being the frequency of the drive.

TL;DR: In this article, the symmetry of a van der Waals interface of tungsten selenide and black phosphorus was engineered and the spontaneous photovoltaic effect was observed along the polar direction and was absent in the direction perpendicular to it.

TL;DR: In this article, the scalar spin chirality, a three-body spin correlation that breaks time-reversal symmetry, is revealed to couple directly to circularly polarized laser.

TL;DR: In this paper, the authors proposed a novel possibility of dynamically changing the pairing of superconductors from a wave to a charge-ordered phase by driving the system with ac fields.