The recent advent of noisy intermediate-scale quantum devices, especially near-term
quantum computers, has sparked extensive research efforts concerned with their possible …

The quantum Fisher information (QFI) quantifies the ultimate precision of estimating a
parameter from a quantum state and can be regarded as a reliability measure of a quantum …

Quantum thermodynamics has emerged as a separate sub-discipline, revising the concepts
and laws of thermodynamics, at the quantum scale. In particular, there has been a disruptive …

Measurement noise is a major source of noise in quantum metrology. Here, we explore
preprocessing protocols that apply quantum controls to the quantum sensor state prior to the …

In a standard quantum sensing (QS) task one aims at estimating an unknown parameter θ,
encoded into an n-qubit probe state, via measurements of the system. The success of this …

The quantum Fisher information (QFI) plays a crucial role in quantum information theory and
in many practical applications such as quantum metrology. However, computing the QFI is …

Taking accurate measurements of the temperature of quantum systems is a challenging
task. The mathematical peculiarities of quantum information make it virtually impossible to …

Variational quantum algorithms (VQAs) that estimate values of widely used physical
quantities such as the rank, the quantum entropies, the Bures fidelity, and the quantum …

Quantum Fisher information of phase estimation is studied for a single qubit which is
influenced by the two generalized amplitude dam** channels (GADCs) with indefinite …

A significant hurdle in the noisy intermediate-scale quantum (NISQ) era is identifying
functional quantum circuits. These circuits must also adhere to the constraints imposed by …