Quantum metrology provides a route to overcome practical limits in sensing devices. It holds
particular relevance to biology, where sensitivity and resolution constraints restrict …

The coherence theory of random, vector-valued optical fields has been of great research
interest in recent years. In this work we formulate the foundations of electromagnetic …

An ensemble of emitters can behave very differently from its individual constituents when
they interact coherently via a common light field. After excitation of such an ensemble …

Controlling the output of a light emitter is one of the basic tasks in photonics, with landmarks
such as the development of the laser and single-photon sources. The ever growing range of …

Gallium phosphide (GaP) is one of the few available materials with strong optical
nonlinearity and negligible losses in the visible (λ> 450 nm) and near-infrared regime. In this …

We report the generation of twin beams by the parametric amplification four-wave mixing
process and triplet beams by the parametric amplification six-wave mixing (PA SWM) …

Abstract Five decades ago, Hanbury Brown and Twiss (HBT) demonstrated that the angular
size of stars can be measured by correlating the intensity fluctuations measured by two …

Semiconductor photonics is an advanced field, both from fundamental and applicative points
of view, aimed at the integration of the unique features of optical communications and …

Two-photon excited fluorescence (TPEF) is a standard technique in modern microscopy, but
is still affected by photodamage to the probe. It has been proposed that TPEF can be …

Light produced by most natural and artificial sources is unpolarized or partially polarized. At
any instant of time, however, such random light can be regarded as fully polarized, but the …