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 …

In this review, the authors introduce the notion of quantum nonclassicality of light and the
role of nonclassicality in optical quantum metrology. The first part of this paper focuses on …

We find and investigate the optimal scheme of distributed quantum sensing using Gaussian
states for estimation of the average of independent phase shifts. We show that the ultimate …

Quantum phenomena such as entanglement can improve fundamental limits on the
sensitivity of a measurement probe. In optical interferometry, a probe consisting of N …

Interferometers are crucial for precision measurements, including gravitational waves, laser
ranging, radar, and imaging. The phase sensitivity, the core parameter, can be quantum …

We study the phase sensitivity of an SU (1, 1) interferometer from two aspects, ie, the phase
estimation determined by the error propagation formula and that by the quantum Cramér …

We propose a method to generate the multi-mode entangled catalysis squeezed vacuum
states (MECSVS) by embedding the cross-Kerr nonlinear medium into the Mach—Zehnder …

Estimation of the phase delay between interferometer arms is the core of transmission phase
microscopy. Such phase estimation may exhibit an error below the standard quantum (shot …

Entanglement is an important quantum resource to achieve high-sensitivity quantum
metrology. However, the rapid decoherence of quantum entangled states, due to the …

The simultaneous two-parameter estimation problem in a single squeezed-light Mach–
Zehnder interferometer with the double-port homodyne detection is investigated in this work …