The extraordinary sensitivity of plasmonic sensors is well-known in the optics and photonics
community. These sensors exploit simultaneously the enhancement and the localization of …

The minimum resolvable signal in sensing and metrology platforms that rely on optical
readout fields is increasingly constrained by the standard quantum limit, which is determined …

The purpose of quantum technologies is to explore how quantum effects can improve on
existing solutions for the treatment of information. Quantum photonics sensing holds great …

ABSTRACT A new type of quantum interferometer was recently realized that employs
parametric amplifiers (PAs) as the wave splitting and mixing elements. The quantum …

The four-wave mixing process in atomic ensembles has many important applications in
quantum information. We review recent progress on the generation of optical quantum states …

In an unseeded SU (1, 1) interferometer composed of two cascaded degenerate parametric
amplifiers, with direct detection at the output, we demonstrate a phase sensitivity overcoming …

Brillouin microscopy is an emerging label-free imaging technique used to assess local
viscoelastic properties. Quantum-enhanced stimulated Brillouin scattering is demonstrated …

Useful quantum metrology requires nonclassical states with a high particle number and
(close to) the optimal exploitation of the state's quantum correlations. Unfortunately, the …

We present experimental and theoretical results on a new interferometer topology that nests
a SU (2) interferometer, eg, a Mach-Zehnder or Michelson interferometer, inside a SU (1, 1) …

We experimentally demonstrate a method for realizing quantum squeezing enhancement
which is induced by the interference in a two-beam phase-sensitive amplifier (PSA) based …