Quantum teleportation with relativistic communication from first principles

E Tjoa - Physical Review A, 2022 - APS
In this paper we provide a genuine relativistic quantum teleportation protocol the classical
communication component of which makes use of relativistic causal propagation of a …

Second-quantized Unruh-DeWitt detectors and their quantum reference frame transformations

F Giacomini, A Kempf - Physical Review D, 2022 - APS
We generalize the Unruh-DeWitt detector model to second quantization. We illustrate this
model by applying it to an excited particle in a superposition of relativistic velocities. We …

Unruh phenomena and thermalization for qudit detectors

C Lima, E Patterson, E Tjoa, RB Mann - Physical Review D, 2023 - APS
We study Unruh phenomena for a qudit detector coupled to a quantized scalar field,
comparing its response to that of a standard qubit-based Unruh-DeWitt detector. We show …

Experimental activation of strong local passive states with quantum information

NA Rodríguez-Briones, H Katiyar, E Martín-Martínez… - Physical Review Letters, 2023 - APS
Strong local passivity is a property of multipartite quantum systems from which it is
impossible to extract energy locally. Surprisingly, if the strong local passive state displays …

Gluing together quantum field theory and quantum mechanics: A look at the Bell-Clauser-Horne-Shimony-Holt inequality

MS Guimaraes, I Roditi, SP Sorella - Physical Review D, 2024 - APS
The Bell-Clauser-Horne-Shimony-Holt (Bell-CHSH) inequality in the vacuum state of a
relativistic scalar quantum field is revisited by making use of the Hilbert space H⊗ HAB …

Lower bound on the energy density in classical and quantum field theories

AC Wall - Physical Review Letters, 2017 - APS
A novel method for deriving energy conditions in stable field theories is described. In a local
classical theory with one spatial dimension, a local energy condition always exists. For a …

Quantum signaling in relativistic motion and across acceleration horizons

RH Jonsson - Journal of Physics A: Mathematical and …, 2017 - iopscience.iop.org
The quantum channel between two particle detectors provides a prototype framework for the
study of wireless quantum communication via relativistic quantum fields. In this article we …

Correlation-enhanced algorithmic cooling

NA Rodríguez-Briones, E Martín-Martínez, A Kempf… - Physical review …, 2017 - APS
We propose a method for increasing the purity of interacting quantum systems that takes
advantage of correlations present due to the internal interaction. In particular, when this …

[HTML][HTML] A Study of Spin 1 Unruh–De Witt Detectors

FM Guedes, MS Guimaraes, I Roditi, SP Sorella - Universe, 2024 - mdpi.com
A study of the interaction of spin 1 Unruh–De Witt detectors with a relativistic scalar quantum
field is presented here. After tracing out the field modes, the resulting density matrix for a …

Engineering negative stress-energy densities with quantum energy teleportation

N Funai, E Martín-Martínez - Physical Review D, 2017 - APS
We use quantum energy teleportation in the light-matter interaction as an operational means
to create quantum field states that violate energy conditions and have negative local stress …