Zobrazeno 1 - 10
of 390
pro vyhledávání: '"Paula, F. M."'
Publikováno v:
Phys.Rev.A 109, 052219 (2024)
We investigate the dynamics of ergotropy in open systems under Markovian and non-Markovian evolutions. In this scenario, we begin by formulating the ergotropy of an arbitrary qubit state in terms of energy and coherence. Thus, we determine the condit
Externí odkaz:
http://arxiv.org/abs/2403.04698
Publikováno v:
Phys.Rev.A 107, 012220 (2023)
We introduce a generalized approach to characterize the non-Markovianity of quantum dynamical maps via breakdown of monotonicity of thermodynamic functions. By adopting an entropy-based formulation of quantum thermodynamics, we use the relationship b
Externí odkaz:
http://arxiv.org/abs/2210.03767
Publikováno v:
Phys. Rev. A 102, 053716 (2020)
Dicke superrandiance is a cooperative phenomenon which arises from the collective coupling of an ensemble of atoms to the electromagnetic radiation. Here we discuss the quantifying of quantum coherence for the Dicke model of superradiance in the mean
Externí odkaz:
http://arxiv.org/abs/2007.02872
Autor:
Passos, M. H. M., Obando, P. C., Balthazar, W. F., Paula, F. M., Huguenin, J. A. O., Sarandy, M. S.
Publikováno v:
Opt. Lett. 44(10) 2478-2481 (2019)
We propose an all-optical experiment to quantify non-Markovianity in an open quantum system through quantum coherence of a single quantum bit. We use an amplitude damping channel implemented by an optical setup with an intense laser beam simulating a
Externí odkaz:
http://arxiv.org/abs/1807.05378
Publikováno v:
EPL 108, 10003 (2014)
We identify ambiguities in the available frameworks for defining quantum, classical, and total correlations as measured by discordlike quantifiers. More specifically, we determine situations for which either classical or quantum correlations are not
Externí odkaz:
http://arxiv.org/abs/1408.1562
Autor:
Paula, F. M., Silva, I. A., Montealegre, J. D., Souza, A. M., deAzevedo, E. R., Sarthour, R. S., Saguia, A., Oliveira, I. S., Soares-Pinto, D. O., Adesso, G., Sarandy, M. S.
Publikováno v:
Phys. Rev. Lett. 111, 250401 (2013)
Correlations in quantum systems exhibit a rich phenomenology under the effect of various sources of noise. We investigate theoretically and experimentally the dynamics of quantum correlations and their classical counterparts in two nuclear magnetic r
Externí odkaz:
http://arxiv.org/abs/1310.1465
Publikováno v:
Europhysics Letters 103, 50008 (2013)
We introduce the concepts of geometric classical and total correlations through Schatten 1-norm (trace norm), which is the only Schatten p-norm able to ensure a well-defined geometric measure of correlations. In particular, we derive the analytical e
Externí odkaz:
http://arxiv.org/abs/1307.3579
Publikováno v:
Phys. Rev. A 87, 042115 (2013)
Geometric quantum discord is a well-defined measure of quantum correlation if Schatten 1-norm (trace norm) is adopted as a distance measure. Here, we analytically investigate the dynamical behavior of the 1-norm geometric quantum discord under the ef
Externí odkaz:
http://arxiv.org/abs/1303.5110
Publikováno v:
Phys. Rev. A 87, 064101 (2013)
It has recently been pointed out that the geometric quantum discord, as defined by the Hilbert-Schmidt norm (2-norm), is not a good measure of quantum correlations, since it may increase under local reversible operations on the unmeasured subsystem.
Externí odkaz:
http://arxiv.org/abs/1302.7034
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