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Correction to the geometric phase by structured environments: The onset of non-Markovian effects
(American Physical Society, 2015-04)
We study the geometric phase of a two-level system under the presence of a structured environment, particularly analyzing its correction with the ohmicity parameter s and the onset of non-Markovianity. We first examine the ...
Geometric phase corrections on a moving particle in front of a dielectric mirror
(Europhysics Letters, 2017-06)
We consider an atom (represented by a two-level system) moving in front of a dielectric plate, and study how traces of dissipation and decoherence (both effects induced by vacuum field fluctuations) can be found in the ...
Geometric phase with nonunitary evolution in the presence of a quantum critical bath
(American Physical Society, 2010-12)
Geometric phases, arising from cyclic evolutions in a curved parameter space, appear in a wealth of physical settings. Recently, and largely motivated by the need of an experimentally realistic definition for quantum ...
Nonunitary geometric phases: A qubit coupled to an environment with random noise
(American Physical Society, 2013-03-29)
We describe the decoherence process induced on a two-level quantum system in direct interaction with a nonequilibrium environment. The nonequilibrium feature is represented by a nonstationary random function corresponding ...
Geometric phase accumulated in a driven quantum system coupled to a structured environment
(American Physical Society, 2020-05)
We study the role of driving in a two-level system evolving under the presence of a structured environment in different regimes. We find that adding a periodic modulation to the two-level system can greatly enhance the ...
Geometric vector potentials from nonadiabatic spin dynamics
(American Physical Society, 2017-07)
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 ...
Enhancement of quantum correlations and a geometric phase for a driven bipartite quantum system in a structured environment
(American Physical Society, 2021-03)
We study the role of driving in an initial maximally entangled state evolving under the presence of a structured environment in a weak and strong regime. We focus on the enhancement and degradation of maximal concurrence ...
Boundary-induced effect encoded in the corrections to the geometric phase acquired by a bipartite two-level system
(American Physical Society, 2020-03)
We present a bipartite two-level system coupled to electromagnetic quantum vacuum fluctuations through a general dipolar coupling. We derive the master equation in the framework of an open quantum system, assuming an ...
Towards detecting traces of non-contact quantum friction in the corrections of the accumulated geometric phase
(Nature, 2020-02)
The geometric phase can be used as a fruitful venue of investigation to infer features of the quantum systems. Its application can reach new theoretical frontiers and imply innovative and challenging experimental proposals. ...
A general treatment of geometric phases and dynamical invariants
(EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY, 2008)
Based only on the parallel-transport condition, we present a general method to compute Abelian or non-Abelian geometric phases acquired by the basis states of pure or mixed density operators, which also holds for nonadiabatic ...