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 …

The main power of quantum sensors is achieved when the probe is composed of several
particles. In this situation, quantum features such as entanglement contribute in enhancing …

We show that the performance of critical quantum metrology protocols, counterintuitively,
can be enhanced by finite temperature. We consider a toy-model squeezing Hamiltonian …

We propose two critical dissipative quantum metrology schemes for single parameter
estimation which are based on a quantum probe consisting of a coherently driven ensemble …

Critical quantum metrology relies on the extreme sensitivity of a system's eigenstates near
the critical point of a quantum phase transition to Hamiltonian perturbations. This means that …

Squeezing is essential to many quantum technologies and our understanding of quantum
physics. Here, we show a novel type of steady-state squeezing that can be generated in the …

Quantum systems used for metrology can offer enhanced precision over their classical
counterparts. The design of quantum sensors can be optimized by maximizing the quantum …

We study quantum phase sensing with asymmetric two-mode entangled coherent states
(ECSs) in which the two local amplitudes take different values. We find the asymmetry …

Atomic nonlinear interferometry has wide applications in quantum metrology and quantum
information science. Here we propose a nonlinear time-reversal interferometry scheme with …

Virtual excitations, inherent to ultrastrongly coupled light-matter systems, induce measurable
modifications in system properties, offering a novel resource for quantum technologies. In …