Recent theoretical and experimental progress on nanolasers is reviewed with a focus on the
emission properties of devices operating with a few or even an individual semiconductor …

How small can a laser be made? What characteristic properties must a device possess to
still be called a laser? How can one prove laser action in the limiting cases of single-emitter …

We investigate radiative coupling between emitters in quantum-dot (QD) nanolasers. For
typical systems with tens to hundreds of active emitters, a strong impact of sub-and …

The classical description of laser field buildup, based on time-averaged photon statistics of
Class A lasers, rests on a statistical mixture of coherent and incoherent photons. Here …

Metallic nanocavity lasers provide important technological advancement toward even
smaller integrable light sources. They give access to widely unexplored lasing physics in …

We present a simple method to reconstruct the mode distribution of multimode classical and
nonclassical optical fields using a single measurement of higher-order photon number …

Most measurements of fluorescence lifetimes on the single-molecule level are carried out
using avalanche photon diodes (APDs). These single-photon counters are inherently slow …

Even though the quantized interaction between light and matter in the photoelectric effect is
considered one of the cornerstones in the development of quantum mechanics, it was long …

Quantum imaging using photon pairs with strong quantum correlations has been harnessed
to bring quantum advantages to various fields from biological imaging to range finding. Such …

While equilibrium phase transitions are easily described by order parameters and free-
energy landscapes, for their non-stationary counterparts these quantities are usually ill …