Published July 2007 | Version v1
Journal article Metadata-only

Decoherence in flux qubits on mesoscopic nonsuperconducting rings

Creators

  • 1. Institute of Physics, University of Silesia, 40-007 Katowice (Poland)

Description

The problem of decoherence in recently proposed flux qubits built on mesoscopic normal metal rings is studied. The relaxation and dephasing times coming from the interaction of the qubit with the measuring device are calculated within the weak coupling spin-boson model. We analyze the effect of the measuring apparatus on the relaxation and dephasing times. The possibility of ohmic approximation for the bath is investigated. Considerably long decoherence times are found. The work is limited to the weak damping regime in low temperatures. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssb.200674641

Additional details

Identifiers

DOI
10.1002/pssb.200674641;

Publishing Information

Journal Title
Physica Status Solidi. B, Basic Research
Journal Volume
244
Journal Issue
7
Journal Page Range
p. 2470-2475
ISSN
0370-1972
CODEN
PSSBBD

Conference

Title
30. international conference of theoretical physics (ECNM 06)
Dates
9-14 Sep 2006
Place
Ustron (Poland)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
38065728
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CARBON; DAMPING; EIGENSTATES; HAMILTONIANS; NANOTUBES; QUANTUM MECHANICS; QUBITS; RELAXATION TIME; RINGS; SEMICONDUCTOR MATERIALS; SPECTRAL FUNCTIONS
Descriptors DEC
ELEMENTS; FUNCTIONS; INFORMATION; MATERIALS; MATHEMATICAL OPERATORS; MECHANICS; NANOSTRUCTURES; NONMETALS; QUANTUM INFORMATION; QUANTUM OPERATORS

Optional Information

Notes
With 5 figs., 11 refs.. SICI: 0370-1972(200707)244:7<2470::AID-PSSB200674641>3.0.TX;2-E