Title :
Experimental Realization of a Differential Charge Qubit
Author :
Shaw, M.D. ; Schneiderman, J.F. ; Palmer, B.. ; Delsing, P. ; Echternach, P.M.
Author_Institution :
Univ. of Southern California, Los Angeles
fDate :
6/1/2007 12:00:00 AM
Abstract :
We demonstrate the operation of a differential single Cooper-pair box, a charge qubit consisting of two aluminum islands, isolated from ground, coupled by a pair of small-area Josephson junctions. We have tested four devices, all of which show evidence of quasiparticle poisoning. The devices are characterized with microwave spectroscopy and temperature dependence studies.
Keywords :
Cooper pairs; capacitors; microwave spectra; superconducting junction devices; Josephson junctions; aluminum islands; capacitors; differential charge qubit; differential single Cooper-pair box; microwave spectra; quasiparticle poisoning; Acoustical engineering; Capacitance; Capacitors; Coupling circuits; Josephson junctions; Laboratories; Propulsion; Quantum computing; Superconducting device noise; Voltage; Josephson junction; quantum computation; quasiparticle; qubit; single-electron devices; superconducting devices;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.898653
