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 …

Qubits are physical, a quantum gate thus not only acts on the information carried by the qubit
but also on its energy. What is then the corresponding flow of energy between the qubit and …

Decoherence originates from the leakage of quantum information into external degrees of
freedom. For a qubit, the two main decoherence channels are relaxation and dephasing …

The quantum Zeno effect asserts that quantum measurements inhibit simultaneous unitary
dynamics when the “collapse” events are sufficiently strong and frequent. This applies in the …

This article presents recent progress in the theory of quantum measurement engines and
discusses the implications of them for quantum interpretations and philosophical …

We use a near quantum limited detector to experimentally track individual quantum state
trajectories of a driven qubit formed by the hybridization of a waveguide cavity and a …

This book adopts a novel, physics-first approach to quantum measurement, using physical
experiments as the basis to describe the underlying mathematical formalism. Topics covered …

A nonlinear self-focusing material can amplify random small-amplitude phase modulations
present in an optical beam, leading to the formation of amplitude singularities commonly …

Quantum technology has been rapidly growing due to its potential revolutionary
applications. In particular, superconducting qubits provide a strong light-matter interaction as …

Open-system quantum dynamics described by non-Hermitian effective Hamiltonians have
become a subject of considerable interest. Studies of non-Hermitian physics have revealed …