Jonathan Bar-David

Introduction Click to copy section linkSection link copied! Radical molecules possess at least one unpaired electron, (1−3) but while most exist only for short times as intermediates during chemical reactions, some radicals are stable in ambient conditions, both in the crystalline phase, when dissolved in solution, (1−3) or assembled on surfaces.

Abstract Anti-Stokes photoluminescence (PL) is light emission at a higher photon energy than the excitation, with applications in optical cooling, bioimaging, lasing, and quantum optics. Here, we show how plasmonic nano-cavities activate anti-Stokes PL in WSe2 monolayers through resonant excitation of a dark exciton at room temperature.

Abstract Nitrogen-vacancy (N-V) centers are diamond lattice defects that may be manipulated and controlled by visible light and microwave irradiation. They are considered a promising solid-state platform for a broad range of quantum technologies, such as magnetic field sensing. A major limitation in realizing such applications is the weak optical signal attained from the NVs, making the readout inefficient and prone to noise.