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000840407 1001_ $$0P:(DE-Juel1)167542$$aWillsch, D.$$b0$$ufzj
000840407 245__ $$aGate-error analysis in simulations of quantum computers with transmon qubits
000840407 260__ $$aWoodbury, NY$$bInst.$$c2017
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000840407 520__ $$aIn the model of gate-based quantum computation, the qubits are controlled by a sequence of quantum gates. In superconducting qubit systems, these gates can be implemented by voltage pulses. The success of implementing a particular gate can be expressed by various metrics such as the average gate fidelity, the diamond distance, and the unitarity. We analyze these metrics of gate pulses for a system of two superconducting transmon qubits coupled by a resonator, a system inspired by the architecture of the IBM Quantum Experience. The metrics are obtained by numerical solution of the time-dependent Schrödinger equation of the transmon system. We find that the metrics reflect systematic errors that are most pronounced for echoed cross-resonance gates, but that none of the studied metrics can reliably predict the performance of a gate when used repeatedly in a quantum algorithm.
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000840407 7001_ $$0P:(DE-Juel1)138295$$aMichielsen, K.$$b4$$ufzj
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000840407 773__ $$0PERI:(DE-600)2844156-4$$a10.1103/PhysRevA.96.062302$$gVol. 96, no. 6, p. 062302$$n6$$p062302$$tPhysical review / A$$v96$$x2469-9926$$y2017
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