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

The dynamics of two variants of quantum Fisher information under decoherence is
investigated from a geometrical point of view. We first derive the explicit formulas of these …

By using highly entangled states, quantum metrology guarantees a precision impossible
with classical measurements. Unfortunately such states can be very susceptible to noise …

The single-mode Dicke model is well known to undergo a quantum phase transition from the
so-called normal phase to the superradiant phase (hereinafter called the'superradiant …

The purport of quantum teleportation is to completely transfer information from one party to
another distant partner. However, from the perspective of parameter estimation, it is the …

We investigate the performance of quantum Fisher information (QFI) under the Unruh-
Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect …

The effect of electron-electron interactions on Dirac fermions, and the possibility of an
intervening spin-liquid phase between the semimetal and antiferromagnetic (AF) regimes …

We study the non-Markovian effect on the dynamics of the quantum Fisher information (QFI)
by exactly solving a model consisting of a qubit system subjects to a zero-temperature …

Searching for room-temperature ferromagnetic semiconductors has evolved into a broad
field of material science and spintronics for decades, nevertheless, these novel states …