A qubit subjected to pure dephasing due to classical Gaussian noise can be turned into a
spectrometer of this noise by utilizing its readout under properly chosen dynamical …

We introduce multipulse quantum noise spectroscopy protocols for spectral estimation of the
noise affecting multiple qubits coupled to Gaussian dephasing environments including both …

When two qubits are prepared in a mixture of two Bell states and exposed to local
transmission channels, the dynamics of steerability, Bell nonlocality, and average steered …

We address the dephasing dynamics of a qubit as an effective process to estimate the
temperature of its environment. Our scheme is inherently quantum, since it exploits the …

We investigate the behavior of tripartite entanglement and entropy disorder in three non-
interacting qubits that are first prepared in a mixture state containing Greenberger–Horne …

Active optical media leading to interaction Hamiltonians of the form H= λ˜(a+ a†) ζ represent
a crucial resource for quantum optical technology. In this paper, we address the …

We explore the ability of a qubit probe to characterize unknown parameters of its
environment. By resorting to the quantum estimation theory, we analytically find the ultimate …

We address quantum metrology in critical spin chains with anisotropy and Dzyaloshinskii–
Moriya (DM) interaction, and show how local and quasi-local measurements may be …

A single qubit driven by an appropriate sequence of control pulses can serve as a
spectrometer of local noise affecting its energy splitting. We show that by driving and …

Recently, the Hilbert–Schmidt speed, as a special class of quantum statistical speed, has
been reported to improve interferometric phase in a single-parameter quantum estimation …