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 …

The stable operation of quantum computers will rely on error correction, in which single
quantum bits of information are stored redundantly in the Hilbert space of a larger system …

Gaussian states have played an important role in the physics of continuous-variable
quantum systems. They are appealing for the experimental ease with which they can be …

Fully controllable ultracold atomic systems are creating opportunities for quantum sensing,
yet demonstrating a quantum advantage in useful applications by harnessing entanglement …

Optical atomic clocks are our most precise tools to measure time and frequency,–. Precision
frequency comparisons between clocks in separate locations enable one to probe the space …

Mechanical systems prepared in quantum non-Gaussian states constitute a new advanced
class of phenomena breaking the laws of classical physics. Specifically, such mechanical …

Geometric phase is a key player in many areas of quantum science and technology. In this
review article, several foundational aspects of quantum geometric phases and their relations …

Quantum metrology uses non-classical states, such as Fock states with a specific number of
photons, to achieve an advantage over classical sensing methods. Typically, quantum …

Special quantum states are used in metrology to achieve sensitivities below the limits
established by classically behaving states,. In bosonic interferometers, squeezed states …

Quantum metrology has emerged as a promising avenue for surpassing the limitations of
classical mechanics in high-precision measurements. However, the practical …