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Abstract:

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 corrections to the unitary geometric phase accumulated by the atom. We consider the particle to follow a classical, macroscopically-fixed trajectory and integrate over the vacuum field and the microscopic degrees of freedom of both the plate and the particle in order to calculate friction effects. We compute analytically and numerically the non-unitary geometric phase for the moving qubit under the presence of the quantum vacuum field and the dielectric mirror. We find a velocity dependence in the correction to the unitary geometric phase due to quantum frictional effects. We also show in which cases decoherence effects could, in principle, be controlled in order to perform a measurement of the geometric phase using standard procedures as Ramsey-like interferometry. © CopyrightEPLA, 2017.

Registro:

Documento: Artículo
Título:Geometric phase corrections on a moving particle in front of a dielectric mirror
Autor:Lombardo, F.C.; Villar, P.I.
Filiación:Departamento de Física Juan José Giambiagi, IFIBA, CONICET-UBA, Facultad de Ciencias Exactas, Naturales Ciudad Universitaria, Pabellón 1, Buenos Aires, 1428, Argentina
Año:2017
Volumen:118
Número:5
DOI: http://dx.doi.org/10.1209/0295-5075/118/50003
Título revista:EPL
Título revista abreviado:EPL
ISSN:02955075
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v118_n5_p_Lombardo

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Citas:

---------- APA ----------
Lombardo, F.C. & Villar, P.I. (2017) . Geometric phase corrections on a moving particle in front of a dielectric mirror. EPL, 118(5).
http://dx.doi.org/10.1209/0295-5075/118/50003
---------- CHICAGO ----------
Lombardo, F.C., Villar, P.I. "Geometric phase corrections on a moving particle in front of a dielectric mirror" . EPL 118, no. 5 (2017).
http://dx.doi.org/10.1209/0295-5075/118/50003
---------- MLA ----------
Lombardo, F.C., Villar, P.I. "Geometric phase corrections on a moving particle in front of a dielectric mirror" . EPL, vol. 118, no. 5, 2017.
http://dx.doi.org/10.1209/0295-5075/118/50003
---------- VANCOUVER ----------
Lombardo, F.C., Villar, P.I. Geometric phase corrections on a moving particle in front of a dielectric mirror. EPL. 2017;118(5).
http://dx.doi.org/10.1209/0295-5075/118/50003