Conferencia
Lombardo, F.C.; Villar, P.I.; Diosi L.; Kiefer C.; Halliwell J.J.; Prati E.; Fronzoni L.; Elze H.-T.; Vitiello G. "Geometric phase and quantum correlations for a bipartite two-level system" (2015) 7th International Workshop on Decoherence, Information, Complexity and Entropy: Spacetime Matter Quantum Mechanics ... News on Missing Links, DICE 2014. 626(1)
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Abstract:
We calculate the geometric phase of a bipartite two-level system coupled to an external environment. We compute the correction to the unitary geometric phase through a kinematic approach. To this end, we analyse the reduced density matrix of the bipartite system after tracing over the environmental degrees of freedom, for arbitrary initial states of the composite system. In all cases considered, the correction to the unitary phase has a similar structure as a function of the degree of the entanglement of the initial state. In the case of a maximally entangled state (MES), the survival phase is only the topological phase, and there is no correction induced by the environments. Further, we compute the quantum discord and concurrence of the bipartite state and analyse possible relations among these quantities and the geometric phase acquired during the non-unitary system's evolution. © Published under licence by IOP Publishing Ltd.
Registro:
| Documento: | Conferencia |
| Título: | Geometric phase and quantum correlations for a bipartite two-level system |
| Autor: | Lombardo, F.C.; Villar, P.I.; Diosi L.; Kiefer C.; Halliwell J.J.; Prati E.; Fronzoni L.; Elze H.-T.; Vitiello G. |
| Filiación: | Departamento de Física Juan José Giambiagi, FCEyN UBA, Ciudad Universitaria, Buenos Aires, 1428, Argentina |
| Palabras clave: | Degrees of freedom (mechanics); Geometry; Quantum entanglement; Bipartite systems; External environments; Kinematic approaches; Maximally entangled state; Quantum correlations; Quantum discords; Reduced-density matrix; Topological phase; Quantum theory |
| Año: | 2015 |
| Volumen: | 626 |
| Número: | 1 |
| DOI: | http://dx.doi.org/10.1088/1742-6596/626/1/012043 |
| Título revista: | 7th International Workshop on Decoherence, Information, Complexity and Entropy: Spacetime Matter Quantum Mechanics ... News on Missing Links, DICE 2014 |
| Título revista abreviado: | J. Phys. Conf. Ser. |
| ISSN: | 17426588 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v626_n1_p_Lombardo |
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Citas:
---------- APA ----------
Lombardo, F.C., Villar, P.I., Diosi L., Kiefer C., Halliwell J.J., Prati E., Fronzoni L.,..., Vitiello G. (2015) . Geometric phase and quantum correlations for a bipartite two-level system. 7th International Workshop on Decoherence, Information, Complexity and Entropy: Spacetime Matter Quantum Mechanics ... News on Missing Links, DICE 2014, 626(1).http://dx.doi.org/10.1088/1742-6596/626/1/012043
---------- CHICAGO ----------
Lombardo, F.C., Villar, P.I., Diosi L., Kiefer C., Halliwell J.J., Prati E., et al. "Geometric phase and quantum correlations for a bipartite two-level system" . 7th International Workshop on Decoherence, Information, Complexity and Entropy: Spacetime Matter Quantum Mechanics ... News on Missing Links, DICE 2014 626, no. 1 (2015).http://dx.doi.org/10.1088/1742-6596/626/1/012043
---------- MLA ----------
Lombardo, F.C., Villar, P.I., Diosi L., Kiefer C., Halliwell J.J., Prati E., et al. "Geometric phase and quantum correlations for a bipartite two-level system" . 7th International Workshop on Decoherence, Information, Complexity and Entropy: Spacetime Matter Quantum Mechanics ... News on Missing Links, DICE 2014, vol. 626, no. 1, 2015.http://dx.doi.org/10.1088/1742-6596/626/1/012043
---------- VANCOUVER ----------
Lombardo, F.C., Villar, P.I., Diosi L., Kiefer C., Halliwell J.J., Prati E., et al. Geometric phase and quantum correlations for a bipartite two-level system. J. Phys. Conf. Ser. 2015;626(1).http://dx.doi.org/10.1088/1742-6596/626/1/012043
