Quantum metrology studies the ultimate precision limit of physical quantities by using
quantum strategy. In this paper we apply the quantum metrology technologies to the …

The current race in quantum communication–endeavouring to establish a global quantum
network–must account for special and general relativistic effects. The well-studied general …

We propose a scheme for the quantum metrology of the Schwinger effect and the dynamics
of Gaussian interference power (GIP). The ongoing reliability of the estimation strategy for …

Applying quantum field theory on a classical, curved space-time has led to the enthralling
theoretical predictions of, eg, black hole evaporation and particle creation in the early …

We consider the time delay of interfering single photons oppositely traveling in the Kerr
metric of a rotating massive object. Classically, the time delay shows up as a phase …

Quantum illumination can utilize entangled light to detect the low-reflectivity target that is
hidden in a bright thermal background. This technique is applied to the detection of an …

We study the black-box parameter estimation of expanding parameters and the dynamics of
Gaussian interferometric power for the de Sitter space. We find that the state between …

We study the estimation of parameters in a quantum metrology scheme based on entangled
many-body Unruh-DeWitt detectors. It is found that the precision for the estimation of Unruh …

The Hong-Ou-Mandel (HOM) effect is analyzed for photons in a modified Mach-Zehnder
setup with two particles experiencing different gravitational potentials, which are later …

A quantum ranging protocol to determine the distance between an observer and a target in
the near‐Earth curved spacetime is proposed. Unlike quantum illumination, the quantum …