Description
Springer International Workshop On Superconducting Nano-Electronics Devices Sned Proceedings 2002 Edition by Jukka Pekola Berardo Ruggiero Paolo Silvestrini
Thisvolumereportsthemajorpartofthescientificcontributionsofthefirstinternational workshoponSuperconductingNano-ElectronicsDevices(SNED)heldinNapoliItalyat theendofMay2001. Theaimoftheworkshopwastofocusonrecentexperimentalandtheoreticalresultsin thefieldofsuperconductingnano-electronicsdevices. Itcombinedphysicswithpresent andfuturetechnologicalapplications:bothfundamentalandappliedaspectswerecovered. SpecialemphasiswasgiventoquantumcoherenceandcomputationusingsmallJosephson junctionsnoiseinultrasensitivenanodevicesandpossibilitiesofmakinguseofsupercon- ductivityinvariouson-chipdevices. Withtheseattributesandwithrecognizedinvited speakersintheirspecialtiestheworkshopmanagedtobringtogetheracollectionof scientistsfromnearbybutdistinctresearchcommunities. Thiswaytheatmosphereofthe workshopbecameveryopenanddiscussionswerelivelybothduringandoutsidethe sessions. Thisfreshdiscussionhopefullygaveeveryparticipantalotofnewideasfor furtherworkbackintheirhomeinstitutes. OneofthecentraltopicsintheworkshopwastheuseofdifferentJosephsonjunction configurationsasimplementationsofquantumbits.Atthetimeoftheworkshopwewere justwaitingforthesecondwaveofbreakthroughsinthisfield:theresultsemergingfrom theparticipatinglaboratoriesoftheworkshopjustatthetimeofthewritingofthispreface perhapsalsoprovetheusefulnessofourworkshop. Anotherfocuswasonvarioustopicsrelatedtoultrasensativedetectors. Theybring quantumlimitationstoapplicationsandmanydeviceconceptsareresultsofunderstanding fundamentalandexcitingphenomenainsuperconductivity. Noiseandon-chipcooling wereexplicitlydiscussedinthedetectorsessionsaswell. ThechoiceofthelocationrecognizestheroleandthetraditionsofNapoliespeciallyin thefieldofmacroscopicquantumcoherenceoneofthemainissuesoftheworkshop. It furtherguaranteedtheparticipantsastimulatingatmosphereatthemeeting. InconclusionwewishtothanktheIstitutoItalianopergliStudiFilosoficitheIstituto diCiberneticadelConsiglioNazionaledelleRicerchetheUniversityofJyviiskyliithe IstitutoNazionalediFisicaNuclearetheIstitutoNazionalediFisicadellaMateriathe DipartimentoScienzeFisicheandtheRettoratodell'UniversitadiNapoli"FedericoII" fortheirsupport. ThanksarealsoduetoAirLiquideCRYNanowayOxfordInstruments andRaith.ThisinitiativeisintheframeoftheinternationalactivityofMQC2Association on"MacroscopicQuantumCoherenceandComputing. "WeareindebtedtoC. Granata v vi PREFACE and V. CoratoforscientificassistanceandtoF. CaiazzoE. DeGraziaandA. M. Mazzarellafortheirvaluableassistanceinallthetasksconnectedtotheorganizationofthe Workshop. WearealsogratefultoL. LongobardiA. MonacoS. PiscitelliandS. Rombetto forhintsandhelpduringtheWorkshop. ThanksareduetoL. DeFeliceS. Luongoand V. Sindonifortheorganizationofthesocialevent. J. Pekola B. Ruggiero P. Silvestrini CONTENTS QuantumNondemolitionMeasurementsofaQubit . D. V. Averin BayesianQuantumMeasurementofaSingle-Cooper-PairQubit 11 A. Korotkov lIfNoiseinJosephsonQubits 15 E. Paladino L. FaoroG. Falciand R. Fazio SwitchingCurrentsandQuasi-ParticlePoisoningintheSuperconducting SingleElectronTransistor 25 P. AgrenJ. WalterV. Sch611mannandD. B. Haviland JosephsonSystemsforQuantumCoherenceExperiments 33 V. CoratoC. Granata L. LongobardiM. RussoB. Ruggiero andP. Silvestrini SolidStateAnalogueofDoubleSlitInterferometer...43 K. Yu. Arutyunov T. T. HongistoandJ. P. Pekola NoiseandMicrowavePropertiesofSET-Transistors...53 M. EjrnresM. T.SavolainenandJ. Mygind UseofSmallThnnelJunctionsOperatingatT=0. 3K 63 R. LeoniM. G. CastellanoF. ChiarelloandG. Torrioli AHystericSingleCooperPairTransistorforSingleShotReadingof 73 aCharge-Qubit A. CottetD. VionP. JoyezD. EsteveandM. H. Devoret SingleCooperPairElectrometerBasedonaRadio-Frequency-SQUID Scheme 87 A. B. Zorin vii viii CONTENTS PossibilityofSingle-ElectronDevicesandSuperconductingCoherence 97 Yu. A. Pashkin Y. NakamuraT. YamamotoandJ. S. Tsai Frequency-LockedCurrentofCooperPairsinSuperconductingSingle ElectronTransistorwithOhmicResistor...105 S. V. LotkhovS. A. Bogoslovsky A. B. ZorinandJ. Niemeyer SetupforExperimentsontheSupercurrent-PhaseRelationinBloch Transistors-StatusandPossibleApplications 115 M. Gotz V. V. Khanin A. B. ZorinE. Il'ichevS. A. Bogoslovsky andJ. Niemeyer Single-ElectronTransistorsintheRegimeofHighConductance...123 C. WallisserB;LimblachP. yomSteinand R. Schiifer SuperconductingTransistor-EdgeSensorsforTime&EnergyResolved Single-PhotonCountersandforDarkMatterSearches 133 B. Cabrera OptimizationoftheHot-ElectronBolometerandaCascadeQuasiparticle 145 L. Kuzrnin NoiseinRefrigeratingTunnelJunctionsandinMicrobolometers...153 D. V.Anghel NonequilibriumQuasiparticlesandElectronCoolingbyNormalMetal- SuperconductorTunnelJunctions...165 D. Golubevand A. Vasenko MesoscopicJosephsonJunctionsCoupledtoWeakCoherentFields: AnExampleofReciprocalDetection 175 R. Miglioreand A. Messina DynamicsofSuperconductingInterferometersContainingPi-Junctions 183 V. K. Kornev I. I. Soloviev I. V. BorisenkoP. B. Mozhaev andG. A. Table of contents : Preface. Quantum nondemolition measurements of a qubit; D.V. Averin. Bayesian quantum measurement of a single-Cooper-pair qubit; A. Korotkov. 1/f noise in Josephson qubit; E. Paladino et al. Switching currents and quasi-particle poisoning in the superconducting single electron transistor; P. Agren et al. Josephson systems for quantum coherence experiments; V. Corato et al. Solid state analogue of a double slit interferometer; K. Arutyunov et al. Noise and microwave properties of SET-Transistors; M. Ejrnaes et al. Use of small tunnel junctions operating at T=0.3K; R. Leoni et al. A hysteretic single Cooper pair transistor for single shot reading of a charge-qubit; D. Vion et al. Single Cooper pair electrometer based on a radio-frequency-SQUID scheme; A. Zorin. Possibility of single-electron devices and superconducting coherence; Yu.A. Pashkin et al. Frequency-locked current of Cooper pairs in superconducting single electron transistor with ohmic resistor; S.V. Lotkhov et al. Setup for experiment on the supercurrent-phase relation in Bloch transistors status and possible applications; M. Goetz et al. Single-electron transistors in the regime of high conductance; C. Walliser et al. Superconducting transition-edge sensors for time & energy resolved single-photon counters and for dark matter search; B. Cabrera. Optimization of the hot-electron bolometer and cascade quasiparticle; L. Kuzmin. Noise in refrigerating tunnel junctions and in microbolometers; D.V. Anghel. Nonequilibrium quasiparticles and electron cooling by normal metal-superconductor tunnel junctions; D. Golubev A. Vasenko. Mesoscopic Josephson junctions coupled to weak coherent fields: an example of reciprocal detection; R. Migliore A Messina. Dynamics ofsuperconducting interferometers containing pi-junctions; V.K. Kornev et al. Superconducting current-phase dependance in High-Tc symmetrical bicrystal junction; G.A. Ovsyannikov et al. Superconducting quantum detector for astronomy and X-ray spectroscopy; A.D. Semenov et al. Lifetime of even-parity states of a Bloch transistor; J. Mannik et al. Magnetic field dependance of retrapping currents in DC-SQUIDs.S. Saito et al. Josephson versus Kondo coupling at a quantum dot with superconducting contacts; G. Campagano et al. Index.