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DC Field | Value | Language |
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dc.contributor.author | Apollaro, Tony John George | - |
dc.contributor.author | Di Franco, Carlo | - |
dc.contributor.author | Plastina, Francesco | - |
dc.contributor.author | Paternostro, Mauro | - |
dc.date.accessioned | 2022-08-04T08:26:48Z | - |
dc.date.available | 2022-08-04T08:26:48Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Apollaro, T. J., Di Franco, C., Plastina, F., & Paternostro, M. (2011). Memory-keeping effects and forgetfulness in the dynamics of a qubit coupled to a spin chain. Physical Review A, 83(3), 032103. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/100297 | - |
dc.description.abstract | Using recently proposed measures for non-Markovianity [H.-P. Breuer, E. M. Laine, and J. Piilo, Phys. Rev. Lett. 103, 210401 (2009)], we study the dynamics of a qubit coupled to a spin environment via an energy-exchange mechanism. We show the existence of a point, in the parameter space of the system, where the qubit dynamics is effectively Markovian and that such a point separates two regions with completely different dynamical behaviors. Indeed, our study demonstrates that the qubit evolution can in principle be tuned from a perfectly forgetful one to a deep non-Markovian regime where the qubit is strongly affected by the dynamical backaction of the environmental spins. By means of a theoretical quantum process tomography analysis, we provide a complete and intuitive characterization of the qubit channel. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | American Physical Society | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Quantum systems | en_GB |
dc.subject | Markov spectrum | en_GB |
dc.subject | Spintronics | en_GB |
dc.subject | Quantum theory | en_GB |
dc.title | Memory-keeping effects and forgetfulness in the dynamics of a qubit coupled to a spin chain | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1103/PhysRevA.83.032103 | - |
dc.publication.title | Physical Review A | en_GB |
Appears in Collections: | Scholarly Works - FacSciPhy |
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