71 citations · 570 across the 39 of their papers we have counts for
40 papers
Local Vacuum Entanglement through Most Entangled Modes
T. Rick Perche, Patricia Ribes-Metidieri
We find the shape of the modes containing most of the entanglement between two disjoint spherical regions in the vacuum of a free massless real scalar field in 1+3 Minkowski spacet…
Non-perturbative measurements of two-point functions in quantum field theory
Sebastian Holmén, T. Rick Perche
We present a non-perturbative method through which local probes can access the two-point function of a quantum field within a region of spacetime. By considering a lattice of gaple…
Optimization of entanglement harvesting with arbitrary temporal profiles: the limit of second order perturbation theory
Marcos Morote-Balboa, T. Rick Perche
We study the protocol of entanglement harvesting when two local probes couple to the vacuum of a real scalar quantum field with arbitrary temporal profiles. We use a Hermite expans…
When does entanglement through gravity imply gravitons?
Nikolaos Mitrakos, Maria Papageorgiou, T. Rick Perche +1
Detection of entanglement through the Newtonian potential has been claimed to support the existence of gravitons, by extrapolating to a thought experiment which demonstrates that c…
(PhD Thesis) The Information Locally Stored in Quantum Fields: From Entanglement to Gravity
T. Rick Perche
This is an updated version of my PhD thesis, defended at the University of Waterloo on the 2nd of April 2025, uploaded to the ArXiv with the goal of reaching a wider audience. The…
Bose polarons as relativistic Unruh-DeWitt detectors: Entanglement harvesting from Bose-Einstein condensates
T. Rick Perche, Francesco Gozzini, Markus K. Oberthaler
We show that a bound impurity in a Bose-Einstein condensate can be directly mapped to an Unruh-DeWitt detector interacting with a relativistic quantum field. We provide explicit ex…
Subsystem entanglement and separability in quantum reference frames
T. Rick Perche, Natália Salomé Móller, Guilherme Franzmann
We find a necessary condition for subsystems to become entangled after a quantum reference frame transformation. We then distinguish between subsystems that admit separable descrip…
Finite-size clocks in quantum field theory and the twin paradox
Matheus H. Zambianco, T. Rick Perche
Vacuum fluctuations in quantum field theory impose fundamental limitations on our ability to measure time at arbitrarily short scales. To investigate the impact of universal quantu…
Trajectory-Protected Quantum Computing
Barbara Šoda, Pierre-Antoine Graham, T. Rick Perche +1
We introduce a novel method that simultaneously isolates a quantum computer from decoherence and enables the controlled implementation of computational gates. We demonstrate a quan…
State updates and useful qubits in relativistic quantum information
José Polo-Gómez, T. Rick Perche, Eduardo Martín-Martínez
We address the longstanding challenge of consistently updating quantum states after selective measurements in a relativistic spacetime. Standard updates along the future lightcones…
Causality in relativistic quantum interactions without mediators
Eirini C. Telali, T. Rick Perche, Eduardo Martín-Martínez
We analyse the interaction between two quantum systems in spacetime and we compare two possible models to describe it: 1) a fully quantum field theoretical (QFT) description of the…
A relativistic QFT description for the interaction of a spin with a magnetic field
Ruhi Shah, Eduardo Martín-Martínez, T. Rick Perche
We analyze how non-relativistic effective models for the magnetic coupling of a spin to the electromagnetic field (proportional to ) emerge…
The stress-energy tensor of an Unruh-DeWitt detector
T. Rick Perche, J. P. M. Pitelli, Daniel A. T. Vanzella
We propose a model for a finite-size particle detector, which allows us to derive its stress-energy tensor. This tensor is obtained from a covariant Lagrangian that describes not o…
A Universal Quantum Computer From Relativistic Motion
Philip A. LeMaitre, T. Rick Perche, Marius Krumm +1
We present an explicit construction of a relativistic quantum computing architecture using a variational quantum circuit approach that is shown to allow for universal quantum compu…
The multimode nature of spacetime entanglement in QFT
Ivan Agullo, Béatrice Bonga, Eduardo Martín-Martínez +5
We demonstrate the presence of multimode entanglement in the vacuum state of a free, massless scalar quantum field in four-dimensional flat spacetime between two sets of field mode…
Closed-form expressions for smeared bi-distributions of a massless scalar field: non-perturbative and asymptotic results in relativistic quantum information
T. Rick Perche
Using spacetime Gaussian test functions, we find closed-form expressions for the smeared Wightman function, Feynman propagator, retarded and advanced Green's functions, causal prop…
Fully Relativistic Entanglement Harvesting
T. Rick Perche, José Polo-Gómez, Bruno de S. L. Torres +1
We study the protocol of entanglement harvesting when the particle detectors that harvest entanglement from the field are replaced by fully relativistic quantum field theories. We…
Ambient temperature versus ambient acceleration in the circular motion Unruh effect
Cameron R. D. Bunney, Leo Parry, T. Rick Perche +1
It is well known that the experience of a linearly accelerated observer with acceleration , interacting with a massless scalar field in its vacuum state in Minkowski space…
Particle Detectors from Localized Quantum Field Theories
T. Rick Perche, José Polo-Gómez, Bruno de S. L. Torres +1
We present a fully relativistic model for localized probes in quantum field theory. Furthermore, we show that it is possible to obtain particle detector models from localized quant…
Duality between amplitude and derivative coupled particle detectors in the limit of large energy gaps
T. Rick Perche, Matheus H. Zambianco
We present a duality between a particle detector model coupled to the amplitude of a scalar field and coupled to the field's derivative in the limit of large energy gaps. We show t…
Migrating Carrollian particles on magnetized black hole horizons
Jiri Bicak, David Kubiznak, T. Rick Perche
By considering a misaligned (asymptotically uniform) magnetic field in the background of a rotating black hole, we uncover a possibility for a highly non-trivial motion of Carrolli…
The role of quantum degrees of freedom of relativistic fields in quantum information protocols
T. Rick Perche, Eduardo Martín-Martínez
We analyze the differences between relativistic fields with or without quantum degrees of freedom in relativistic quantum information protocols. We classify the regimes where the e…
Carrollian Motion in Magnetized Black Hole Horizons
Finnian Gray, David Kubiznak, T. Rick Perche +1
We revisit the motion of massless particles with anyonic spin in the horizon of Kerr--Newman geometry. As recently shown, such particles can move within the horizon of the black ho…
Harvesting entanglement from the gravitational vacuum
T. Rick Perche, Boris Ragula, Eduardo Martín-Martínez
We study how quantum systems can harvest entanglement from the quantum degrees of freedom of the gravitational field. Concretely, we describe in detail the interaction of non-relat…