The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

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

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

We propose an approach to quantum phase estimation that can attain precision near the
Heisenberg limit without requiring single-particle-resolved state detection. We show that the …

We use a self-assembled two-dimensional Coulomb crystal of∼ 70 ions in the presence of
an external transverse field to engineer a simulator of the Dicke Hamiltonian, an iconic …

Abstract 'Schrödinger cat'states of light, defined as quantum superpositions of quasi-
classical coherent states, have recently emerged as an alternative to single-photon qubits …

Recent developments in atomic physics have enabled the experimental generation of many-
body entangled states to boost the performance of quantum sensors beyond the Standard …

Useful quantum metrology requires nonclassical states with a high particle number and
(close to) the optimal exploitation of the state's quantum correlations. Unfortunately, the …

We study the performance of initial product states of n-body systems in generalized quantum
metrology protocols that involve estimating an unknown coupling constant in a nonlinear k …

In this paper, we present an experimentally feasible protocol to generate the cat states in the
microwave resonator coupled to a superconducting qubit. The setup employs a detuned …