Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

Controllable arrays of ions and ultracold atoms can simulate complex many-body
phenomena and may provide insights into unsolved problems in modern science. To this …

Linear quantum measurements with independent particles are bounded by the standard
quantum limit, which limits the precision achievable in estimating unknown phase …

Quantum scrambling describes the spreading of information into many degrees of freedom
in quantum systems, such that the information is no longer accessible locally but becomes …

We experimentally demonstrate a nonlinear detection scheme exploiting time-reversal
dynamics that disentangles continuous variable entangled states for feasible readout. Spin …

Genuinely quantum states of a harmonic oscillator may be distinguished from their classical
counterparts by the Glauber-Sudarshan P representation—a state lacking a positive P …

Critical metrology relies on the precise preparation of a system in its ground state near a
quantum phase transition point where quantum correlations get very strong. Typically, this …

We propose a versatile Loschmidt echo protocol to detect and quantify multiparticle
entanglement. It allows us to extract the quantum Fisher information for arbitrary pure states …

Quantum entanglement has been generated and verified in cold-atom experiments and
used to make atom-interferometric measurements below the shot-noise limit. However …