Gauge freedom in quantum electrodynamics (QED) outside of textbook regimes is reviewed.
It is emphasized that QED subsystems are defined relative to a choice of gauge. Each …

Can high-energy physics be simulated by low-energy, non-relativistic, many-body systems
such as ultracold atoms? Such ultracold atomic systems lack the type of symmetries and …

The formulation of a measurement theory for relativistic quantum field theory (QFT) has
recently been an active area of research. In contrast to the asymptotic measurement …

We study entanglement harvested from a quantum field through local interaction with Unruh–
DeWitt detectors undergoing linear acceleration. The interactions allow entanglement to be …

Physical theories are developed to describe phenomena in particular regimes, and
generally are valid only within a limited range of scales. For example, general relativity …

We analyze potential violations of causality in Unruh DeWitt-type detector models in
relativistic quantum information. We proceed by first studying the relation between faster …

In this work we show that a tunable coupling between microwave resonators can be
engineered by means of simple Josephson junctions circuits, such as dc and rf …

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 work we revisit the famous Fermi two-atom problem, which concerns how relativistic
causality impacts atomic transition probabilities, using the tools from relativistic quantum …

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 …