%0 Journal Article
%A Willsch, D.
%A Nocon, M.
%A Jin, F.
%A De Raedt, H.
%A Michielsen, K.
%T Gate-error analysis in simulations of quantum computers with transmon qubits
%J Physical review / A
%V 96
%N 6
%@ 2469-9926
%C Woodbury, NY
%I Inst.
%M FZJ-2017-07939
%P 062302
%D 2017
%X In the model of gate-based quantum computation, the qubits are controlled by a sequence of quantum gates. In superconducting qubit systems, these gates can be implemented by voltage pulses. The success of implementing a particular gate can be expressed by various metrics such as the average gate fidelity, the diamond distance, and the unitarity. We analyze these metrics of gate pulses for a system of two superconducting transmon qubits coupled by a resonator, a system inspired by the architecture of the IBM Quantum Experience. The metrics are obtained by numerical solution of the time-dependent Schrödinger equation of the transmon system. We find that the metrics reflect systematic errors that are most pronounced for echoed cross-resonance gates, but that none of the studied metrics can reliably predict the performance of a gate when used repeatedly in a quantum algorithm.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000416845600004
%R 10.1103/PhysRevA.96.062302
%U https://juser.fz-juelich.de/record/840407