Quantum feedback: theory, experiments, and applications

J Zhang, Y Liu, RB Wu, K Jacobs, F Nori - Physics Reports, 2017 - Elsevier
The control of individual quantum systems is now a reality in a variety of physical settings.
Feedback control is an important class of control methods because of its ability to reduce the …

Restoring Heisenberg scaling in noisy quantum metrology by monitoring the environment

F Albarelli, MAC Rossi, D Tamascelli, MG Genoni - Quantum, 2018 - quantum-journal.org
We study quantum frequency estimation for N qubits subjected to independent Markovian
noise, via strategies based on time-continuous monitoring of the environment. Both physical …

Experimental Bayesian calibration of trapped-ion entangling operations

L Gerster, F Martínez-García, P Hrmo, MW van Mourik… - PRX Quantum, 2022 - APS
The performance of quantum gate operations is experimentally determined by how correctly
operational parameters can be determined and set, and how stable these parameters can …

Quantum speed limits under continuous quantum measurements

LP García-Pintos, A Del Campo - New Journal of Physics, 2019 - iopscience.iop.org
The pace of evolution of physical systems is fundamentally constrained by quantum speed
limits (QSL), which have found broad applications in quantum science and technology. We …

Parameter estimation by learning quantum correlations in continuous photon-counting data using neural networks

E Rinaldi, MG Lastre, SG Herreros, S Ahmed… - arxiv preprint arxiv …, 2023 - arxiv.org
We present an inference method utilizing artificial neural networks for parameter estimation
of a quantum probe monitored through a single continuous measurement. Unlike existing …

Adaptive measurement filter: efficient strategy for optimal estimation of quantum Markov chains

A Godley, M Guta - Quantum, 2023 - quantum-journal.org
Continuous-time measurements are instrumental for a multitude of tasks in quantum
engineering and quantum control, including the estimation of dynamical parameters of open …

Rapid estimation of drifting parameters in continuously measured quantum systems

L Cortez, A Chantasri, LP García-Pintos, J Dressel… - Physical Review A, 2017 - APS
We investigate the determination of a Hamiltonian parameter in a quantum system
undergoing continuous measurement. We demonstrate a computationally rapid method to …

Structure identification and state initialization of spin networks with limited access

Y Kato, N Yamamoto - New Journal of Physics, 2014 - iopscience.iop.org
For reliable and consistent quantum information processing carried out on a quantum
network, the network structure must be fully known and a desired initial state must be …

Feedback control of Rabi oscillations in circuit QED

W Cui, F Nori - Physical Review A—Atomic, Molecular, and Optical …, 2013 - APS
We consider the feedback stabilization of Rabi oscillations in a superconducting qubit which
is coupled to a microwave readout cavity. The signal is readout by homodyne detection of …

Multiparameter estimation along quantum trajectories with sequential Monte Carlo methods

JF Ralph, S Maskell, K Jacobs - Physical Review A, 2017 - APS
This paper proposes an efficient method for the simultaneous estimation of the state of a
quantum system and the classical parameters that govern its evolution. This hybrid …