Open quantum systems (OQSs) cannot always be described with the Markov approximation,
which requires a large separation of system and environment time scales. An overview is …

Organic electroluminescent devices are becoming increasingly important because of their
potential applications for large area flat-panel displays and general lighting. The internal …

It is an important challenge to reduce the power consumption and size of lasers, but
progress has been impeded by quantum noise overwhelming the coherent radiation at …

Early experiments in magnonics were made using ferrite samples, largely due to the
intrinsically low magnetic (spin-wave) dam** in these materials. Historically, magnonic …

An approach to optimizing the Q factors of two-dimensional photonic crystal (2D-PC)
nanocavities based on deep learning is hereby proposed and demonstrated. We prepare a …

Slow light with a remarkably low group velocity is a promising solution for buffering and time-
domain processing of optical signals. It also offers the possibility for spatial compression of …

Photonic crystal nanocavities that simultaneously possess small modal volumes and high
quality (Q) factors have opened up novel research areas in photonics during this decade …

Almost twenty years ago, light was slowed down to less than 10-7 of its vacuum speed in a
cloud of ultracold atoms of sodium. Upon a sudden turn-off of the coupling laser, a slow light …

The semiconductor lasers in use today rely on various types of cavity, making use of Fresnel
reflection at a cleaved facet, total internal reflection between two different media, Bragg …

Recently, strongly modulated photonic crystals, fabricated by the state-of-the-art
semiconductor nanofabrication process, have realized various novel optical properties. This …