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 …

Operator noncommutation, a hallmark of quantum theory, limits measurement precision,
according to uncertainty principles. Wielded correctly, though, noncommutation can boost …

Quantum state estimation for continuously monitored dynamical systems involves assigning
a quantum state to an individual system at some time, conditioned on the results of …

The most famous quasi-probability distribution, the Wigner function, has played a pivotal role
in the development of a continuous-variable quantum theory that has clear analogues of …

Weak-value amplification (WVA) is a metrological protocol that amplifies ultrasmall physical
effects. However, the amplified outcomes necessarily occur with highly suppressed …

Weak value amplification (WVA) is a technique by which one can magnify the apparent
strength of a measurement signal. Some have claimed that WVA can outperform more …

In quantum mechanics, the concept of weak measurements allows for the description of a
quantum system both in terms of the initial preparation and the final state (post-selection) …

It is argued that a weak value of an observable is a robust property of a single pre-and
postselected quantum system rather than a statistical property. During an infinitesimal time a …

In a quantum-noise limited system, weak-value amplification using postselection normally
does not produce more sensitive measurements than standard methods for ideal detectors …

Optical interferometry plays an essential role in precision metrology such as in gravitational
wave detection, gyroscopes, and environmental sensing. Weak value amplification enables …