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RESEARCH PRODUCT
Characterisation of Cooper pair boxes for quantum computing
Jukka P. PekolaKlavs HansenL. TaskinenN. KimJ. Jussi ToppariM. T. Savolainensubject
SuperconductivityJosephson effectPhysicsCondensed matter physicsEnergy Engineering and Power TechnologyCoulomb blockadeElectrometerCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsQuantum dotElectrical and Electronic EngineeringCooper pairQuantum tunnellingQuantum computerdescription
We have measured and characterised superconducting single Cooper pair boxes (SCB) using superconducting single electron transistor (SET) fabricated on the same chip as an electrometer. The electrometer is sensitive to the potential changes of the SCB island and thus measures the number of excess Cooper pairs on the island. The boxes were of the Al/AlOx/Al Josephson junction type. The SCB and SET were characterised separately and the box storage performance for Cooper pairs was analysed by observing the changes in the SCB island potential while sweeping the gate voltage.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-04-01 | Physica C: Superconductivity |