Sonia Buckley

TL;DR: A new lasing strategy is reported: an atomically thin crystalline semiconductor—that is, a tungsten diselenide monolayer—is non-destructively and deterministically introduced as a gain medium at the surface of a pre-fabricated PCC, allowing an optical pumping threshold as low as 27 nanowatts at 130 kelvin similar to the value achieved in quantum-dot PCC lasers.

TL;DR: The applications of single-photon sources and their various requirements are discussed, before reviewing the progress made on a QD platform in meeting these requirements.

TL;DR: In this paper, a 2D optical antenna is constructed by transferring one monolayer tungsten diselenide (WSe2) onto a photonic crystal (PhC) with a cavity.

Abstract: Monolayers of transition metal dichalcogenides (TMDCs) have emerged as new optoelectronic materials in the two dimensional (2D) limit, exhibiting rich spin-valley interplays, tunable excitonic effects, and strong light–matter interactions. An essential yet undeveloped ingredient for many photonic applications is the manipulation of its light emission. Here we demonstrate the control of excitonic light emission from monolayer tungsten diselenide (WSe2) in an integrated photonic structure, achieved by transferring one monolayer onto a photonic crystal (PhC) with a cavity. In addition to the observation of an effectively coupled cavity-mode emission, the suspension effects on PhC not only result in a greatly enhanced (~60 times) photoluminescence but also strongly pattern the emission in the subwavelength spatial scale, contrasting on and off the holes. Such an effect leads to a significant diffraction grating effect, which allows us to redistribute the emitted photons both polarly and azimuthally in the far field through designing PhC structures, as revealed by momentum-resolved microscopy. A 2D optical antenna is thus constructed. Our work suggests a new way of manipulating photons in hybrid 2D photonics, important for future energy efficient optoelectronics and 2D nano-lasers.

TL;DR: In this paper, an integrated optoelectronic platform combining superconducting electronics with photonic signaling is proposed to enable neuromorphic computing beyond the scale of the human brain, which requires massive interconnectivity, extreme energy efficiency, and complex signaling mechanisms.