Quantum feedback: theory, experiments, and applications
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 …
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
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 …
noise, via strategies based on time-continuous monitoring of the environment. Both physical …
Experimental Bayesian calibration of trapped-ion entangling operations
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 …
operational parameters can be determined and set, and how stable these parameters can …
Quantum speed limits under continuous quantum measurements
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 …
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
We present an inference method utilizing artificial neural networks for parameter estimation
of a quantum probe monitored through a single continuous measurement. Unlike existing …
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 …
engineering and quantum control, including the estimation of dynamical parameters of open …
Rapid estimation of drifting parameters in continuously measured quantum systems
We investigate the determination of a Hamiltonian parameter in a quantum system
undergoing continuous measurement. We demonstrate a computationally rapid method to …
undergoing continuous measurement. We demonstrate a computationally rapid method to …
Structure identification and state initialization of spin networks with limited access
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 …
network, the network structure must be fully known and a desired initial state must be …
Feedback control of Rabi oscillations in circuit QED
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 …
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
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 …
quantum system and the classical parameters that govern its evolution. This hybrid …