Geometric phase is a key player in many areas of quantum science and technology. In this
review article, several foundational aspects of quantum geometric phases and their relations …

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 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 derive a bound on the ability of a linear-optical network to estimate a linear combination
of independent phase shifts by using an arbitrary nonclassical but unentangled input state …

Quantum metrology is the science that aims to achieve precision measurements by making
use of quantum principles. Attribute to the well-developed techniques of manipulating and …

High-sensitivity gyroscope is widely used for rotation detection in several practical
applications. Recently, exceptional points (EPs) have garnered considerable attention for …

This theoretical work initiates contact between two frontier disciplines of physics, namely,
atomic superfluid rotation and cavity optomechanics. It considers an annular Bose-Einstein …

We investigate the phase enhancement of quantum states subject to nonlinear phase shifts.
The optimal phase estimation of even entangled coherent states (ECSs) is shown to be …

We present an improved phase estimation scheme employing entangled SU (1, 1) coherent
states in comparison to NOON and entangled coherent states under perfect and lossy …

Phase diffusion represents a crucial obstacle toward the implementation of high-precision
interferometric measurements and phase-shift-based communication channels. Here we …