Dephasing of a superconducting qubit induced by photon noise

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BERTET, 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. 95, 257002

@article{Bertet2005Depha-9524, title={Dephasing of a superconducting qubit induced by photon noise}, year={2005}, doi={10.1103/PhysRevLett.95.257002}, 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} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/9524"> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:57:42Z</dc:date> <dc:contributor>Chiorescu, Irinel</dc:contributor> <dc:contributor>Burkard, Guido</dc:contributor> <dcterms:issued>2005</dcterms:issued> <dcterms:bibliographicCitation>First publ. in: arXiv:cond-mat/0512428 [cond-mat.mes-hall], also publ. in: Physical Review Letters 95 (2005), 257002</dcterms:bibliographicCitation> <dc:contributor>Semba, Kouichi</dc:contributor> <dc:creator>Semba, Kouichi</dc:creator> <dc:rights>deposit-license</dc:rights> <dcterms:title>Dephasing of a superconducting qubit induced by photon noise</dcterms:title> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:57:42Z</dcterms:available> <dc:contributor>Mooij, J. E.</dc:contributor> <dc:creator>Chiorescu, Irinel</dc:creator> <dc:contributor>DiVincenzo, David P.</dc:contributor> <dc:creator>Mooij, J. E.</dc:creator> <dcterms:abstract xml:lang="eng">We 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.</dcterms:abstract> <dc:creator>Harmans, C. J. P. M.</dc:creator> <dc:creator>Burkard, Guido</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9524"/> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103416863-3868037-7"/> <dc:contributor>Bertet, Patrice</dc:contributor> <dc:contributor>Harmans, C. J. P. M.</dc:contributor> <dc:creator>Bertet, Patrice</dc:creator> <dc:language>eng</dc:language> <dc:creator>DiVincenzo, David P.</dc:creator> <dc:format>application/pdf</dc:format> </rdf:Description> </rdf:RDF>

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