Dephasing of a superconducting qubit induced by photon noise

Kurzanzeige
dc.contributor.authorBertet, Patricedeu
dc.contributor.authorChiorescu, Irineldeu
dc.contributor.authorBurkard, Guido
dc.contributor.authorSemba, Kouichideu
dc.contributor.authorHarmans, C. J. P. M.deu
dc.contributor.authorDiVincenzo, David P.deu
dc.contributor.authorMooij, J. E.deu
dc.date.accessioned2011-03-24T17:57:42Zdeu
dc.date.available2011-03-24T17:57:42Zdeu
dc.date.issued2005deu
dc.description.abstractWe have studied the dephasing of a superconducting flux-qubit coupled to a DC-SQUID base oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environment on the qubit coherence. We can quantitatively account for our data with a simple model in which thermal fluctuations of the photon number in the oscillator are the limiting factor. In particular, we observe a strong reduction of the dephasing rate whenever the coupling is tuned to zero. At the optimal point we find a large spin-echo decay time of 4mys.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.arxivcond-mat/0512428
dc.identifier.citationFirst publ. in: arXiv:cond-mat/0512428 [cond-mat.mes-hall], also publ. in: Physical Review Letters 95 (2005), 257002deu
dc.identifier.doi10.1103/PhysRevLett.95.257002
dc.identifier.ppn313192464deu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/9524
dc.language.isoengdeu
dc.legacy.dateIssued2009deu
dc.rightsterms-of-usedeu
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/deu
dc.subject.ddc530deu
dc.titleDephasing of a superconducting qubit induced by photon noiseeng
dc.typeJOURNAL_ARTICLEdeu
dspace.entity.typePublication
kops.citation.bibtex
@article{Bertet2005Depha-9524,
  year={2005},
  doi={10.1103/PhysRevLett.95.257002},
  title={Dephasing of a superconducting qubit induced by photon noise},
  volume={95},
  journal={Physical Review Letters},
  author={Bertet, Patrice and Chiorescu, Irinel and Burkard, Guido and Semba, Kouichi and Harmans, C. J. P. M. and DiVincenzo, David P. and Mooij, J. E.},
  note={Article Number: 257002}
}
kops.citation.iso690BERTET, Patrice, Irinel CHIORESCU, Guido BURKARD, Kouichi SEMBA, C. J. P. M. HARMANS, David P. DIVINCENZO, J. E. MOOIJ, 2005. Dephasing of a superconducting qubit induced by photon noise. In: Physical Review Letters. 2005, 95, 257002. Available under: doi: 10.1103/PhysRevLett.95.257002deu
kops.citation.iso690BERTET, Patrice, Irinel CHIORESCU, Guido BURKARD, Kouichi SEMBA, C. J. P. M. HARMANS, David P. DIVINCENZO, J. E. MOOIJ, 2005. Dephasing of a superconducting qubit induced by photon noise. In: Physical Review Letters. 2005, 95, 257002. Available under: doi: 10.1103/PhysRevLett.95.257002eng
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kops.sourcefield.plainPhysical Review Letters. 2005, 95, 257002. Available under: doi: 10.1103/PhysRevLett.95.257002eng
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