Backaction effects of a SSET measuring a qubit spectroscopy and ground State measurement

Turek, Benjamin, Majer, Johannes, Clerk, Aashish, Girvin, Steve, Wallra , Andreas, Bladh, Kevin, Gunnarsson, David, Duty, Tim, Delsing, Per and Schoelkopf, Robert (2005). Backaction effects of a SSET measuring a qubit spectroscopy and ground State measurement. In: The 2004 Applied Superconductivity Conference. Applied Superconductivity Conference, Jacksonville, FL, USA, (880-883). 3-8 October 2004. doi:10.1109/TASC.2005.850096


Author Turek, Benjamin
Majer, Johannes
Clerk, Aashish
Girvin, Steve
Wallra , Andreas
Bladh, Kevin
Gunnarsson, David
Duty, Tim
Delsing, Per
Schoelkopf, Robert
Title of paper Backaction effects of a SSET measuring a qubit spectroscopy and ground State measurement
Conference name Applied Superconductivity Conference
Conference location Jacksonville, FL, USA
Conference dates 3-8 October 2004
Proceedings title The 2004 Applied Superconductivity Conference   Check publisher's open access policy
Journal name IEEE Transactions On Applied Superconductivity   Check publisher's open access policy
Place of Publication United States
Publisher I E E E
Publication Year 2005
Sub-type Fully published paper
DOI 10.1109/TASC.2005.850096
ISSN 1051-8223
Volume 15
Issue 2 Part 1
Start page 880
End page 883
Total pages 4
Language eng
Abstract/Summary We investigate the backaction of superconducting single-electron transistor (SSET) continuously measuring a Cooper-pair box. Due to the minimized backaction of the SSET, we observe a 2e periodic Coulomb staircase according to the two-level system Hamiltonian of the Cooper-pair box. We demonstrate that we can control the quantum broadening of the ground state in-situ. We perform spectroscopy measurements and demonstrate that we have full control over the Cooper-pair box Hamiltonian. The ability to reduce the backaction is a necessary condition to use the SSET as a quantum state readout for the CPB as a qubit.
Subjects 240000 Physical Sciences
Keyword Quantum computing
Superconducting devices
Single-electron transistor
Cooper pair
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 1 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 06 Aug 2008, 08:51:20 EST by Thelma Whitbourne on behalf of School of Mathematics & Physics