Quantum non-Markovian behavior at the chaos border
Por:
García-Mata I., Pineda C., Wisniacki D.A.
Publicada:
21 mar 2014
Resumen:
In this work we study the non-Markovian behavior of a qubit coupled to an environment in which the corresponding classical dynamics change from integrable to chaotic. We show that in the transition region, where the dynamics has both regular islands and chaotic areas, the average non-Markovian behavior is enhanced to values even larger than those in the regular regime. This effect can be related to the non-Markovian behavior as a function of the initial state of the environment, where maxima are attained at the regions dividing separate areas in classical phase space, particularly at the borders between chaotic and regular regions. Moreover, we show that the fluctuations of the fidelity of the environment - which determine the non-Markovianity measure - give a precise image of the classical phase portrait. © 2014 IOP Publishing Ltd.
Filiaciones:
García-Mata I.:
Instituto de Investigaciones Físicas de Mar Del Plata (IFIMAR, CONICET), Universidad Nacional de Mar Del Plata, Mar del Plata, Argentina
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Argentina
Pineda C.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
Wisniacki D.A.:
Departamento de Física, FCEyN, Ciudad Universitaria, Pabellón 1, 1428 Buenos Aires, Argentina
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