Robustness of exceptional-point-based sensors against parametric noise: the role of Hamiltonian and Liouvillian degeneracies

J Wiersig - Physical Review A, 2020 - APS
Recent experiments have demonstrated the feasibility of exploiting spectral singularities in
open quantum and wave systems, so-called exceptional points, for sensors with strongly …

Quantum zeno and anti-zeno probes of noise correlations in photon polarization

S Virzì, A Avella, F Piacentini, M Gramegna, T Opatrný… - Physical review …, 2022 - APS
We experimentally demonstrate, for the first time, noise diagnostics by repeated quantum
measurements, establishing the ability of a single photon subjected to random polarization …

Experimental proof of quantum Zeno-assisted noise sensing

HV Do, C Lovecchio, I Mastroserio, N Fabbri… - New Journal of …, 2019 - iopscience.iop.org
In the ideal quantum Zeno (QZ) effect, repeated quantum projective measurements can
freeze the coherent dynamics of a quantum system. However, in the weak QZ regime …

Quantum state engineering by steering in the presence of errors

E Medina-Guerra, P Kumar, IV Gornyi, Y Gefen - Physical Review Research, 2024 - APS
Quantum state engineering plays a vital role in various applications in the field of quantum
information. Different strategies, including drive-and-dissipation, adiabatic cooling, and …

Noise-robust quantum sensing via optimal multi-probe spectroscopy

MM Müller, S Gherardini, F Caruso - Scientific reports, 2018 - nature.com
The dynamics of quantum systems are unavoidably influenced by their environment, but in
turn observing a quantum system (probe) can allow one to measure its environment …

Nonequilibrium quantum-heat statistics under stochastic projective measurements

S Gherardini, L Buffoni, MM Müller, F Caruso… - Physical Review E, 2018 - APS
In this paper we aim at characterizing the effect of stochastic fluctuations on the distribution
of the energy exchanged by a quantum system with the external environment under …

[HTML][HTML] Noise sensing via stochastic quantum Zeno

MM Müller, S Gherardini, N Dalla Pozza, F Caruso - Physics Letters A, 2020 - Elsevier
The dynamics of any quantum system is unavoidably influenced by the external
environment. Thus, the observation of a quantum system (probe) can allow the measure of …

Information theoretical limits for quantum optimal control solutions: error scaling of noisy control channels

MM Müller, S Gherardini, T Calarco, S Montangero… - Scientific Reports, 2022 - nature.com
Accurate manipulations of an open quantum system require a deep knowledge of its
controllability properties and the information content of the implemented control fields. By …

Reconstructing quantum entropy production to probe irreversibility and correlations

S Gherardini, MM Müller, A Trombettoni… - Quantum Science …, 2018 - iopscience.iop.org
One of the major goals of quantum thermodynamics is the characterization of irreversibility
and its consequences in quantum processes. Here, we discuss how entropy production …

Maximizing information obtainable by quantum sensors through the quantum Zeno effect

B Ronchi, A Zwick, GA Álvarez - Physical Review Applied, 2024 - APS
Efficient quantum sensing technologies rely on the precise control of quantum sensors,
particularly two-level systems or qubits, to optimize estimation processes. We here exploit …