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

P. M. Echternach ; Justin F. Schneiderman ; M. D. Shaw ; Per Delsing (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Quantum Information Processing (1570-0755). Vol. 8 (2009), 2-3, p. 183-198.
[Artikel, refereegranskad vetenskaplig]

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.

Denna post skapades 2009-06-17. Senast ändrad 2009-06-22.
CPL Pubid: 95091