Dephasing caused by the Thin Spectrum in a BCS Superconductor

Jasper van Wezel; Jeroen van den Brink

doi:10.1063/1.2752005

Dephasing caused by the Thin Spectrum in a BCS Superconductor

Jasper van Wezel, Jeroen van den Brink

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

2 Citations (Scopus)

Abstract

Recently we have shown that the thin spectrum associated with the process of spontaneous symmetry breaking will lead to a maximum coherence time for many‐particle solid state qubits. In this paper we will discuss how the general mechanism of dephasing caused by a thin spectrum can be applied to the case of BCS superconductors. We will find that the BCS superconducting state is a state of broken global U(1) symmetry, and that the thin spectrum associated with the breaking of this phase symmetry induces dephasing and decoherence within the fundamental timescale τ = 2πNℏ/kBT.

Original language	English
Pages (from-to)	332-336
Journal	AIP Conference Proceedings
Volume	918
DOIs	https://doi.org/10.1063/1.2752005
Publication status	Published - 2007

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title = "Dephasing caused by the Thin Spectrum in a BCS Superconductor",

abstract = "Recently we have shown that the thin spectrum associated with the process of spontaneous symmetry breaking will lead to a maximum coherence time for many‐particle solid state qubits. In this paper we will discuss how the general mechanism of dephasing caused by a thin spectrum can be applied to the case of BCS superconductors. We will find that the BCS superconducting state is a state of broken global U(1) symmetry, and that the thin spectrum associated with the breaking of this phase symmetry induces dephasing and decoherence within the fundamental timescale τ = 2πNℏ/kBT.",

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journal = "AIP Conference Proceedings",

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AU - van den Brink, Jeroen

PY - 2007

Y1 - 2007

N2 - Recently we have shown that the thin spectrum associated with the process of spontaneous symmetry breaking will lead to a maximum coherence time for many‐particle solid state qubits. In this paper we will discuss how the general mechanism of dephasing caused by a thin spectrum can be applied to the case of BCS superconductors. We will find that the BCS superconducting state is a state of broken global U(1) symmetry, and that the thin spectrum associated with the breaking of this phase symmetry induces dephasing and decoherence within the fundamental timescale τ = 2πNℏ/kBT.

AB - Recently we have shown that the thin spectrum associated with the process of spontaneous symmetry breaking will lead to a maximum coherence time for many‐particle solid state qubits. In this paper we will discuss how the general mechanism of dephasing caused by a thin spectrum can be applied to the case of BCS superconductors. We will find that the BCS superconducting state is a state of broken global U(1) symmetry, and that the thin spectrum associated with the breaking of this phase symmetry induces dephasing and decoherence within the fundamental timescale τ = 2πNℏ/kBT.

U2 - 10.1063/1.2752005

DO - 10.1063/1.2752005

M3 - Article (Academic Journal)

SN - 0094-243X

VL - 918

SP - 332

EP - 336

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

ER -

Dephasing caused by the Thin Spectrum in a BCS Superconductor

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