Publikation:

Dissipative Frustration in a One Dimensional Josephson Junction Chain

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2019

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Andergassen, Sabine

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-4dsihwnztvop9
DOI (zitierfähiger Link)
https://doi.org/10.3390/proceedings2019012051
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CC BY 4.0

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Physik: Publikationen
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Published

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Proceedings (MDPI). 2019, 12(1), 51. eISSN 2504-3900. Available under: doi: 10.3390/proceedings2019012051

Zusammenfassung

We study the influence of dissipative frustration on the one dimensional Josephson junction chain. In particular we analyze the dissipative quantum phase transition between the chain being superconducting or insulating, the purity as a measure of quantum—environment correlation and the logarithmic negativity as an entanglement measure. The dissipative frustration is provided by coupling two non-commuting operators to the environment. A possible realization of these environmental couplings are shunt resistances between the superconducting islands and resistances to the ground. Using a self-consistent harmonic approximation we determine the critical line separating superconducting and insulating phases and find a nonmonotonic behavior as a function of the dissipative strength. The interplay between both environmental couplings is also reflected in the purity and the logarithmic negativity. We find a change in their behavior depending whether a second bath is present or not.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

quantum phase transition; dissipation; Josephson junction chain

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ISO 690MAILE, Dominik, Sabine ANDERGASSEN, Wolfgang BELZIG, Gianluca RASTELLI, 2019. Dissipative Frustration in a One Dimensional Josephson Junction Chain. In: Proceedings (MDPI). 2019, 12(1), 51. eISSN 2504-3900. Available under: doi: 10.3390/proceedings2019012051
BibTex
@article{Maile2019-11-19Dissi-47611,
  year={2019},
  doi={10.3390/proceedings2019012051},
  title={Dissipative Frustration in a One Dimensional Josephson Junction Chain},
  number={1},
  volume={12},
  journal={Proceedings (MDPI)},
  author={Maile, Dominik and Andergassen, Sabine and Belzig, Wolfgang and Rastelli, Gianluca},
  note={Article Number: 51}
}
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