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Mostrando ítems 1-10 de 15
Artículo
Chiral Majorana interference as a source of quantum entanglement
(American Physical Society, 2018)
Two-particle Hanbury Brown-Twiss interferometry with chiral Majorana modes produces maximally entangled electron-hole pairs. We promote the electron-hole quantum number to an interferometric degree of freedom and complete ...
Artículo
Geometric driving of two-level quantum systems
(American Physical Society, 2020)
We investigate a class of cyclic evolutions for driven two-level quantum systems (effective spin 1/2) with a particular focus on the geometric characteristics of the driving and their specific imprints on the quantum ...
Artículo
Geometric vector potentials from nonadiabatic spin dynamics
(American Physical Society, 2017-07-27)
We propose a theoretical framework that captures the geometric vector potential emerging from the nonadiabatic spin dynamics of itinerant carriers subject to arbitrary magnetic textures. Our approach results in a series ...
Artículo
Effective geometric phases and topological transitions in SO(3) and SU(2) rotations
(IOP Publishing, 2016-03-24)
We address the development of geometric phases in classical and quantum magnetic moments (spin-1/2) precessing in an external magnetic field. We show that nonadiabatic dynamics lead to a topological phase transition ...
Artículo
Magnetic switching of spin-scattering centers in Dresselhaus [110] circuits
(American Physical Society, 2024-01-24)
Spin carriers subject to Dresselhaus [110] (D110) spin-orbit coupling (SOC) gather null spin phases in closed circuits, contrary to usual Rashba and Dresselhaus [001] SOC. We show that D110 spin phases can be activated in ...
Artículo
Classical Physics and the Bounds of Quantum Correlations
(American Physical Society, 2016-06-24)
A unifying principle explaining the numerical bounds of quantum correlations remains elusive, despite the efforts devoted to identifying it. Here, we show that these bounds are indeed not exclusive to quantum theory: for ...
Artículo
Control of the spin geometric phase in semiconductor quantum rings
(Springer Natur, 2013)
Since the formulation of the geometric phase by Berry, its relevance has been demonstrated in a large variety of physical systems. However, a geometric phase of the most fundamental spin-1/2 system, the electron spin, ...
Artículo
Spin resonance under topological driving fields
(IOP Publishing, 2017-06)
We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the ...
Artículo
Chiral spin channels in curved graphene pn junctions
(American Physical Society, 2023-09-20)
We show that the chiral modes in circular graphene pn junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive the effective Hamiltonian for the spin ...
Artículo
Nonmonotonic quantum phase gathering in curved spintronic circuits
(American Physical Society, 2021-11-24)
Spin carriers propagating along quantum circuits gather quantum spin phases depending on the circuit’s size, shape, and spin-orbit coupling (SOC) strength. These phases typically grow monotonically with the SOC strength, ...