| Literature DB >> 24877923 |
Evan Jeffrey1, Daniel Sank1, J Y Mutus1, T C White1, J Kelly1, R Barends1, Y Chen1, Z Chen1, B Chiaro1, A Dunsworth1, A Megrant1, P J J O'Malley1, C Neill1, P Roushan1, A Vainsencher1, J Wenner1, A N Cleland1, John M Martinis.
Abstract
Faster and more accurate state measurement is required for progress in superconducting qubit experiments with greater numbers of qubits and advanced techniques such as feedback. We have designed a multiplexed measurement system with a bandpass filter that allows fast measurement without increasing environmental damping of the qubits. We use this to demonstrate simultaneous measurement of four qubits on a single superconducting integrated circuit, the fastest of which can be measured to 99.8% accuracy in 140 ns. This accuracy and speed is suitable for advanced multiqubit experiments including surface-code error correction.Year: 2014 PMID： 24877923 DOI： 10.1103/PhysRevLett.112.190504
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161