224 citations · 819 across the 29 of their papers we have counts for
29 papers
Gaussian-augmented bosonic matrix-product states: theory and applications
Erickson Tjoa, J. Ignacio Cirac
We propose and analyze the structure of a family of bosonic quantum many-body states that have the following features: (i) they include all pure Gaussian states and finite-dimensio…
Multi-agent Autoformalization of Tensor Network Theory
Sirui Lu, Erickson Tjoa, J. Ignacio Cirac
We build a team of specialized large language-model agents and present an agent-driven workflow for research-level formalization in theoretical physics, with the autoformalization…
Bipartite and tripartite entanglement in pure dephasing relativistic spin-boson model
Kensuke Gallock-Yoshimura, Erickson Tjoa
We study nonperturbatively the entanglement generation between two and three emitters in an exactly solvable relativistic variant of the spin-boson model, equivalent to the time-in…
Transmission of quantum information through quantum fields in curved spacetimes
Michael Kasprzak, Erickson Tjoa
We construct a relativistic quantum communication channel between two localized qubit systems, mediated by a relativistic quantum field, that can achieve the theoretical maximum fo…
Particle detectors under chronological hazard
Ana Alonso-Serrano, Erickson Tjoa, Luis J. Garay +1
We analyze how the presence of closed timelike curves (CTCs) characterizing a time machine can be discerned by placing a local particle detector in a region of spacetime which is c…
The Unruh-DeWitt model and its joint interacting Hilbert space
Erickson Tjoa, Finnian Gray
In this work we make the connection between the Unruh-DeWitt particle detector model applied to quantum field theory in curved spacetimes and the rigorous construction of the spin-…
Unruh phenomena and thermalization for qudit detectors
Caroline Lima, Everett Patterson, Erickson Tjoa +1
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 that ther…
Wigner function for quantum field theory via spacetime tiling
Erickson Tjoa
We present a construction of the Wigner function for a bosonic quantum field theory that has well-defined ultraviolet (UV) and infrared (IR) properties. Our construction uses the l…
Fuzzy spacetime: fundamental limits of quantum-optical holographic bulk reconstruction
Erickson Tjoa
In this Essay we construct a concrete, non-perturbative realization of metric reconstruction using quantum-optical model of particle detectors in relativistic quantum information.…
Effective master equations for two accelerated qubits
Greg Kaplanek, Erickson Tjoa
We revisit the problem involving two constantly accelerating Unruh-DeWitt detectors using Open Effective Field Theory methods. We study the time evolution of the joint detector sta…
Non-perturbative simple-generated interactions with a quantum field for arbitrary Gaussian states
Erickson Tjoa
In this work we first collect and generalize several existing non-perturbative models for the interaction between a single two-level qubit detector and a relativistic quantum scala…
Quantum teleportation with relativistic communication from first principles
Erickson Tjoa
In this work we provide a genuine relativistic quantum teleportation protocol whose classical communication component makes use of relativistic causal propagation of a quantum fiel…
Fermi two-atom problem: non-perturbative approach via relativistic quantum information and algebraic quantum field theory
Erickson Tjoa
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 quan…
Modest holography and bulk reconstruction in asymptotically flat spacetimes
Erickson Tjoa, Finnian Gray
In this work we present a "modest" holographic reconstruction of the bulk geometry in asymptotically flat spacetime using the two-point correlators of boundary quantum field theory…
Unruh-DeWitt detector in dimensionally-reduced static spherically symmetric spacetimes
Erickson Tjoa, Robert B. Mann
We study the dynamics of an Unruh-DeWitt detector interacting with a massless scalar field in an arbitrary static spherically symmetric spacetimes whose metric is characterised by…
Holographic reconstruction of asymptotically flat spacetimes
Erickson Tjoa, Finnian Gray
We present a "holographic" reconstruction of bulk spacetime geometry using correlation functions of a massless field living at the "future boundary" of the spacetime, namely future…
Channel capacity of relativistic quantum communication with rapid interaction
Erickson Tjoa, Kensuke Gallock-Yoshimura
In this work we study nonperturbatively the transmission of classical and quantum information in globally hyperbolic spacetimes, where the communication channel is between two qubi…
When entanglement harvesting is not really harvesting
Erickson Tjoa, Eduardo Martín-Martínez
We revisit the entanglement harvesting protocol when two detectors are in causal contact. We study the role of field-mediated communication in generating entanglement between the t…
The time traveler's guide to the quantization of zero modes
Ana Alonso-Serrano, Erickson Tjoa, Luis J. Garay +1
We study the relationship between the quantization of a massless scalar field on the two-dimensional Einstein cylinder and in a spacetime with a time machine. We find that the latt…
Quantum imprints of gravitational shockwaves
Finnian Gray, David Kubiznak, Taillte May +2
Gravitational shockwaves are simple exact solutions of Einstein equations representing the fields of ultrarelativistic sources and idealized gravitational waves (shocks). Historica…
Harvesting Entanglement with Detectors Freely Falling into a Black Hole
Kensuke Gallock-Yoshimura, Erickson Tjoa, Robert B. Mann
We carry out the first investigation of the entanglement and mutual information harvesting protocols for detectors freely falling into a black hole. Working in -dimensional…
What makes a particle detector click
Erickson Tjoa, Irene López Gutiérrez, Allison Sachs +1
We highlight fundamental differences in the models of light-matter interaction between the behaviour of Fock state detection in free space versus optical cavities. To do so, we stu…
Harvesting correlations in Schwarzschild and collapsing shell spacetimes
Erickson Tjoa, Robert B. Mann
We study the harvesting of correlations by two Unruh-DeWitt static detectors from the vacuum state of a massless scalar field in a background Vaidya spacetime consisting of a colla…
Vacuum entanglement harvesting with a zero mode
Erickson Tjoa, Eduardo Martín-Martínez
We investigate vacuum entanglement harvesting in the presence of a zero mode. We show that, for a variety of detector models and couplings (namely, Unruh-DeWitt qubit and harmonic…