Nonclassical states of light find applications in enhancing the performance of optical
interferometric experiments, with notable example of gravitational-wave detectors. Still, the …

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 …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

We investigate the quantification of coherence in the infinite-dimensional systems, and
especially, we focus on the infinite-dimensional bosonic systems in the Fock space. We find …

We present an improved phase estimation scheme employing entangled coherent states
and demonstrate that these states give the smallest variance in the phase parameter in …

We investigate the performance of entangled coherent states for quantum-enhanced phase
estimation. An exact analytical expression of quantum Fisher information is derived to show …

We show that, leaving aside accelerated cosmic expansion, all experimental data in high
energy physics that are commonly agreed to require physics beyond the Standard Model …

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

Among the applications of optical phase measurement, the differential interference contrast
microscope is widely used for the evaluation of opaque materials or biological tissues …

The modern scientific method is critically dependent on precision measurements of physical
parameters. A classic example is the measurement of the optical phase enabled by optical …