Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Tjoa, Erickson"'
Autor:
Kasprzak, Michael, Tjoa, Erickson
We construct a relativistic quantum communication channel between two localized qubit systems, mediated by a relativistic quantum field, that can achieve the theoretical maximum for the quantum capacity in arbitrary curved spacetimes using the Unruh-
Externí odkaz:
http://arxiv.org/abs/2408.00518
Publikováno v:
J. High Energ. Phys. 2024, 1 (2024)
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 causally disconnected from the CTCs. Our study shows that not only can
Externí odkaz:
http://arxiv.org/abs/2402.17825
Autor:
Tjoa, Erickson, Gray, Finnian
Publikováno v:
2024 J. Phys. A: Math. Theor. 57 325301
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-boson model. With some modifications, we show that existing results ab
Externí odkaz:
http://arxiv.org/abs/2402.05795
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 there are limitations to the utility of the detailed balance condition as
Externí odkaz:
http://arxiv.org/abs/2309.04598
Autor:
Tjoa, Erickson
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 local mode formalism in algebraic quantum field theory that is valid in
Externí odkaz:
http://arxiv.org/abs/2305.19341
Autor:
Tjoa, Erickson
In this Essay we construct a concrete, non-perturbative realization of metric reconstruction using quantum-optical model of particle detectors in relativistic quantum information. The non-perturbative approach allows us to realize a version of "short
Externí odkaz:
http://arxiv.org/abs/2303.16326
Autor:
Kaplanek, Greg, Tjoa, Erickson
Publikováno v:
Phys. Rev. A. 107 (2023) 012208
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 state using a Markovian approximation which differs from the standard one
Externí odkaz:
http://arxiv.org/abs/2207.13750
Autor:
Tjoa, Erickson
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 scalar field in arbitrary curved spacetimes, where the time evolution is gi
Externí odkaz:
http://arxiv.org/abs/2207.01141
Autor:
Tjoa, Erickson
Publikováno v:
Phys. Rev. A 106, 032432 (2022)
In this work we provide a genuine relativistic quantum teleportation protocol whose classical communication component makes use of relativistic causal propagation of a quantum field. Consequently, the quantum teleportation is fully relativistic by co
Externí odkaz:
http://arxiv.org/abs/2206.09294
Autor:
Tjoa, Erickson
Publikováno v:
Phys. Rev. D 106, 045012 (2022)
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 information (RQI) and algebraic quantum field theory (AQFT). The p
Externí odkaz:
http://arxiv.org/abs/2206.02316