Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

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 …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

Continuously measured quantum systems are characterized by an output current, in the form
of a stochastic and correlated time series, which conveys crucial information about the …

In this work we combine two distinct machine learning methodologies, sequential Monte
Carlo and Bayesian experimental design, and apply them to the problem of inferring the …

Quantum metrology can achieve far better precision than classical metrology, and is one of
the most important applications of quantum technologies in the real world. To attain the …

Tracking a randomly varying optical phase is a key task in metrology, with applications in
optical communication. The best precision for optical-phase tracking has until now been …

We derive a quantum Cramér-Rao bound (QCRB) on the error of estimating a time-changing
signal. The QCRB provides a fundamental limit to the performance of general quantum …

If quantum information processors are to fulfill their potential, the diverse errors that affect
them must be understood and suppressed. But errors typically fluctuate over time, and the …

The quantum dynamics of the coupling between a cavity optical field and a resonator
microwave field via the electro-optic effect is studied. This coupling has the same form as the …