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Progress in the development of a single Cooper-pair box qubit

Journal article
Authors P. M. Echternach
Justin F. Schneiderman
M. D. Shaw
Per Delsing
Published in Quantum Information Processing
Volume 8
Issue 2-3
Pages 183-198
ISSN 1570-0755
Publication year 2009
Published at
Pages 183-198
Language en
Subject categories Physical Sciences, Condensed Matter Physics, Superconductivity, Low temperature physics, Mesoscopic physics


We describe in this review progress in techniques for measuring the quantum states of the single Cooper-pair box (SCB) at the Jet Propulsion Laboratory, and the use of these techniques to characterize their performance as quantum bits. Initially, the Radio-Frequency-Single-Electron Transistor was used to measure conventional and differential versions of the SCB. To overcome some of the difficulties associated with the radio-frequency single-electron transistor, a transition was made to readout based on the quantum capacitance technique. Using this method, entanglement between two SCBs was demonstrated spectroscopically and with ground state characterization.

Page Manager: Webmaster|Last update: 9/11/2012

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