2012/02/23 by Jerry M. Chow, Jay Gambetta, Jay M. Gambetta +18 · 5 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.109.060501
published as Phys. Rev. Lett. 109, 060501 (2012) · 4 figures, 2 tables plus supplementary material
arxiv created 2012/02/23 · openalex publication_date 2012/08/09 · arxiv updated 2012/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We use quantum process tomography to characterize a full universal set of all-microwave gates on two superconducting single-frequency single-junction transmon qubits. All extracted gate fidelities, including those for Clifford group generators, single-qubit pi/4 and pi/8 rotations, and a two-qubit controlled-NOT, exceed 95% (98%), without (with) accounting for state preparation and measurement errors. Furthermore, we introduce a process map representation in the Pauli basis which is visually efficient and informative. This high-fidelity gate set serves as another critical building block towards scalable architectures of superconducting qubits for error correction schemes.