In this paper we deal with several issues regarding the localization properties of the Unruh-
DeWitt (UdW) detector model. Since its original formulation as a pointlike detector, the UdW …

We review recent literature on the connection between quantum entanglement and
cosmology, with an emphasis on the context of expanding universes. We discuss recent …

We propose a protocol by which entanglement can be extracted repeatedly from a quantum
field. In analogy with prior work on entanglement harvesting, we call this protocol …

In this paper, we extend the Unruh-DeWitt (UDW) model to include a relativistic quantized
center of mass (cm) for the detector, which traditionally has a classical cm and follows a …

When the level separation of a qubit is modulated periodically across an avoided crossing,
tunneling to the excited state—and consequently Landau–Zener–Stückelberg interference …

Quantum metrology studies the ultimate limit of precision in estimating a physical quantity if
quantum strategies are exploited. Here we investigate the evolution of a two-level atom as a …

We consider quantum signaling between two-level quantum systems in a cavity in the
perturbative regime of the earliest possible arrival times of the signal. We present two main …

We show that particle detectors, such as two-level atoms, in noninertial motion (or in
gravitational fields) could be used to build quantum gates for the processing of quantum …

We consider a model for an oscillatory, relativistic accelerating photodetector inside a cavity
and show that the entangled photon pair production from the vacuum (Unruh effect) can be …

In the framework of open quantum systems, we study the internal dynamics of both freely
falling and static two-level atoms interacting with quantized conformally coupled massless …