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

Progress in the development of a single Cooper-pair box qubit 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

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

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Publisher
Springer Journals
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-009-0097-x
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Quantum Information ProcessingSpringer Journals

Published: Feb 7, 2009

References

  • Experimental realization of a differential charge qubit
    Shaw, M.D.; Schneiderman, J.F.; Palmer, B.S.; Delsing, P.; Echternach, P.M.
  • Characterization of a differential radio-frequency single-electron transistor
    Schneiderman, J.F.; Delsing, P.; Shaw, M.D.; Bozler, H.M.; Echternach, P.M.

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