Phase-dependent noise in Josephson junctions

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Phase-dependent noise in Josephson junctions. / Sheldon, Forrest; Peotta, Sebastiano; Di Ventra, Massimiliano.

In: EUROPEAN PHYSICAL JOURNAL: APPLIED PHYSICS, Vol. 81, No. 1, 10601, 2018.

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Sheldon, Forrest ; Peotta, Sebastiano ; Di Ventra, Massimiliano. / Phase-dependent noise in Josephson junctions. In: EUROPEAN PHYSICAL JOURNAL: APPLIED PHYSICS. 2018 ; Vol. 81, No. 1.

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@article{69cde9f41a1740feb772c29b157847e8,
title = "Phase-dependent noise in Josephson junctions",
abstract = "In addition to the usual superconducting current, Josephson junctions (JJs) support a phase-dependent conductance related to the retardation effect of tunneling quasi-particles. This introduces a dissipative current with a memory-resistive (memristive) character and thus should also affect the current noise. By means of the microscopic theory of tunnel junctions we compute the complete current autocorrelation function of a Josephson tunnel junction and show that this memristive component gives rise to a non-stationary, phase-dependent noise. As a consequence, dynamic and thermal noise necessarily show a phase dependence otherwise absent in nondissipative JJ models. This phase dependence may be realized experimentally as a hysteresis effect if the unavoidable time averaging of the experimental probe is shorter than the period of the Josephson phase.",
keywords = "Condensed Matter - Mesoscale and Nanoscale Physics",
author = "Forrest Sheldon and Sebastiano Peotta and {Di Ventra}, Massimiliano",
year = "2018",
doi = "10.1051/epjap/2017170297",
language = "English",
volume = "81",
journal = "EUROPEAN PHYSICAL JOURNAL: APPLIED PHYSICS",
issn = "1286-0042",
number = "1",

}

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TY - JOUR

T1 - Phase-dependent noise in Josephson junctions

AU - Sheldon, Forrest

AU - Peotta, Sebastiano

AU - Di Ventra, Massimiliano

PY - 2018

Y1 - 2018

N2 - In addition to the usual superconducting current, Josephson junctions (JJs) support a phase-dependent conductance related to the retardation effect of tunneling quasi-particles. This introduces a dissipative current with a memory-resistive (memristive) character and thus should also affect the current noise. By means of the microscopic theory of tunnel junctions we compute the complete current autocorrelation function of a Josephson tunnel junction and show that this memristive component gives rise to a non-stationary, phase-dependent noise. As a consequence, dynamic and thermal noise necessarily show a phase dependence otherwise absent in nondissipative JJ models. This phase dependence may be realized experimentally as a hysteresis effect if the unavoidable time averaging of the experimental probe is shorter than the period of the Josephson phase.

AB - In addition to the usual superconducting current, Josephson junctions (JJs) support a phase-dependent conductance related to the retardation effect of tunneling quasi-particles. This introduces a dissipative current with a memory-resistive (memristive) character and thus should also affect the current noise. By means of the microscopic theory of tunnel junctions we compute the complete current autocorrelation function of a Josephson tunnel junction and show that this memristive component gives rise to a non-stationary, phase-dependent noise. As a consequence, dynamic and thermal noise necessarily show a phase dependence otherwise absent in nondissipative JJ models. This phase dependence may be realized experimentally as a hysteresis effect if the unavoidable time averaging of the experimental probe is shorter than the period of the Josephson phase.

KW - Condensed Matter - Mesoscale and Nanoscale Physics

U2 - 10.1051/epjap/2017170297

DO - 10.1051/epjap/2017170297

M3 - Article

VL - 81

JO - EUROPEAN PHYSICAL JOURNAL: APPLIED PHYSICS

JF - EUROPEAN PHYSICAL JOURNAL: APPLIED PHYSICS

SN - 1286-0042

IS - 1

M1 - 10601

ER -

ID: 11061952