Measurement of coherent charge transfer in an adiabatic Cooper-pair pump

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Fazio, Rosario Hekking, F.W. Pekola, Jukka 2018-05-22T14:31:25Z 2018-05-22T14:31:25Z 2003-08-07
dc.identifier.citation Fazio , R , Hekking , F W & Pekola , J 2003 , ' Measurement of coherent charge transfer in an adiabatic Cooper-pair pump ' PHYSICAL REVIEW B , vol 68 , no. 5 , 054510 , pp. 1-11 . DOI: 10.1103/PhysRevB.68.054510 en
dc.identifier.issn 2469-9950
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 23693b55-a306-4172-af65-fc2c01beed7a
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description.abstract We study adiabatic charge transfer in a superconducting Cooper-pair pump, focusing on the influence of current measurement on coherence. We investigate the limit where the Josephson coupling energy EJ between the various parts of the system is small compared to the Coulomb charging energy EC. In this case, the charge transferred in a pumping cycle QP∼2e, the charge of one Cooper pair: The main contribution is due to incoherent Cooper-pair tunneling. We are particularly interested in the quantum correction to QP, which is due to coherent tunneling of pairs across the pump and which depends on the superconducting phase difference φ0 between the electrodes; 1−QP/(2e)∼(EJ/EC)cosφ0. A measurement of QP tends to destroy the phase coherence. We first study an arbitrary measuring circuit and then specific examples and show that coherent Cooper-pair transfer can, in principle, be detected using an inductively shunted ammeter. en
dc.format.extent 11
dc.format.extent 1-11
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW B en
dc.relation.ispartofseries Volume 68, issue 5 en
dc.rights openAccess en
dc.title Measurement of coherent charge transfer in an adiabatic Cooper-pair pump en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword adiapatic charge transfer
dc.subject.keyword coherent charge transfer
dc.subject.keyword Cooper-pair pump
dc.identifier.urn URN:NBN:fi:aalto-201805222248
dc.identifier.doi 10.1103/PhysRevB.68.054510
dc.type.version publishedVersion

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