The future development of quantum technologies relies on creating and manipulating
quantum systems of increasing complexity, with key applications in computation, simulation …

The development of estimation and control theories for quantum systems is a fundamental
task for practical quantum technology. This vision article presents a brief introduction to …

Recovering an unknown Hamiltonian from measurements is an increasingly important task
for certification of noisy quantum devices and simulators. Recent works have succeeded in …

The quantum Fisher information (QFI) quantifies the ultimate precision of estimating a
parameter from a quantum state and can be regarded as a reliability measure of a quantum …

Characterizing the interactions and dynamics of quantum mechanical systems is an
essential task in develo** quantum technologies. We propose an efficient protocol based …

Efforts to scale-up quantum computation have reached a point where the principal limiting
factor is not the number of qubits, but the entangling gate infidelity. However, the highly …

The efficient validation of quantum devices is critical for emerging technological
applications. In a wide class of use cases the precise engineering of a Hamiltonian is …

Quantum Hamiltonian identification (QHI) is important for characterizing the dynamics of
quantum systems, calibrating quantum devices, and achieving precise quantum control. In …

Recent works have shown that generic local Hamiltonians can be efficiently inferred from
local measurements performed on their eigenstates or thermal states. Realistic quantum …

This paper gives an overview of parameter estimation and system identification for quantum
input–output systems by continuous observation of the output field. We present recent …