Quantum environment for a longer coherence time (Abstract/Comunicazione in atti di convegno)

Type
Label
  • Quantum environment for a longer coherence time (Abstract/Comunicazione in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pietro Liuzzo-Scorpo (1); Alessandro Cuccoli (1); Paola Verrucchi (2,1,3) (2014)
    Quantum environment for a longer coherence time
    in IQIS2014, 7th Italian quantum information science conference, Salerno, 15-19 September 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pietro Liuzzo-Scorpo (1); Alessandro Cuccoli (1); Paola Verrucchi (2,1,3) (literal)
Pagina inizio
  • [37] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.iqis2014.com/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • IQIS2014, 7th Italian quantum information science conference (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • e-book_of_Abstracts (literal)
Note
  • Abstract (literal)
  • Comunicazione (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica ed Astronomia, Universita' di Firenze (2) Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (3) ISC - Istituto dei Sistemi Complessi (literal)
Titolo
  • Quantum environment for a longer coherence time (literal)
Abstract
  • Decoherence is one of the main obstacles placed in the way of the correct functioning of quantum devices. It is an ubiquitous phenomenon, due to the unavoidable interaction between a quantum principal system and its environment, which becomes particularly disruptive when quantum properties are to be exploited and controlled. Despite being an ordinary effect, decoherence is not easily describable in a general framework, as it depends on several details of the physical setup. In this work, we make use of a recently proposed method [1] for studying the dynamical evolution of a generic quantum system subject to decoherence. From such treatment, an analytical expression for a consistent measure of the coherence time, emerges, and formally shows how, and why, decoherence depends on the number of dynamical variables of the environment. Based on this result we propose a strategy for effectively reduce decoherence, and finally implement it in two exemplifying situations where decoherence must be kept under control. [1] D. Calvani, A. Cuccoli, N.I. Gidopoulos, and P. Verrucchi, \"Parametric representation of open quantum systems and cross-over from quantum to classical environment\", Proceedings of the National Academy of Sciences 110 , 6748- 6753. (literal)
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