Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Rojas, Moises"'
This research explores the effects of decoherence on local quantum Fisher information and quantum coherence dynamics in a spin-1/2 Ising-XYZ chain model with independent reservoirs at zero temperature. Contrasting these effects with those in the spin
Externí odkaz:
http://arxiv.org/abs/2406.10142
Autor:
Rojas, Onofre, Rojas, Moises
Publikováno v:
Ann. Phys. (Berlin) 2024, 2400291
A theoretical study of an antiferromagnetically coupled spin system, specifically $\rm{Cu}_{3}-\rm{X}$ $(\rm{X=As, Sb})$, characterized by a slightly distorted equilateral triangle configuration is presented. Using the Heisenberg model with exchange
Externí odkaz:
http://arxiv.org/abs/2406.01340
In this paper, we analyze the operation of an Otto cycle heat machine driven by a non-interacting two-dimensional electron gas on a twisted geometry. We show that due to both the energy quantization on this structure and the adiabatic transformation
Externí odkaz:
http://arxiv.org/abs/2307.16001
Publikováno v:
ANNALEN DER PHYSIK 2023, 2200537
Studying quantum properties in solid-state systems is a significant avenue for research. In this scenario, double quantum dots (DQDs) appear as a versatile platform for technological breakthroughs in quantum computation and nanotechnology. This work
Externí odkaz:
http://arxiv.org/abs/2211.04588
Autor:
de Lima, Daniela Oliveira, de Lira, Douglas Sadalla, Castillo, Lía Ethel Velásquez, Campos, Ana Paula de Lima Mendes, Rojas, Moisés Frías, Junior, Holmer Savastano
Publikováno v:
In Construction and Building Materials 8 November 2024 450
Publikováno v:
In Annals of Physics January 2025 472
In this work, we study the thermal quantum coherence and fidelity in a semiconductor double quantum dot. The device consists of a single electron in a double quantum dot with Rashba spin-orbit coupling in the presence of an external magnetic field. I
Externí odkaz:
http://arxiv.org/abs/2203.06301
Autor:
Silva, Saulo L. L., Rojas, Moises
In this work we analyze the quantum correlations in a spin-1/2 Ising-XXZ diamond chain with one plaquette distorted impurity. We have shown that the introduction of impurity into the chain can significantly increase entanglement as well as quantum co
Externí odkaz:
http://arxiv.org/abs/2106.09646
Autor:
Rojas, Moises, Lobo, Iarley P.
Publikováno v:
Universe 2023, 9(2), 71
We consider the effect of a thermal bath on quantum correlations induced by the gravitational interaction in the weak field limit between two massive cat states, called gravitational cat (gravcat) states. The main goal of this paper is to provide a g
Externí odkaz:
http://arxiv.org/abs/2106.05696
Publikováno v:
Phys. Rev. E 104, 014149 (2021)
This paper presents a conceptual design for quantum heat machines using a pair of coupled double quantum dots (DQDs), each DQD with an excess electron to interact, as an working substance. We define a compression ratio as the ratio between the Coulom
Externí odkaz:
http://arxiv.org/abs/2102.00908