A quantum engineer's guide to superconducting qubits

By Philip Krantz, Morten Kjaergaard, F. Yan, Terry P. Orlando, Simon Gustavsson, William D. Oliver. Applied Physics Reviews, 2019

2,124 citations recorded by the source corpus.

The aim of this review is to provide quantum engineers with an introductory guide to the central concepts and challenges in the rapidly accelerating field of superconducting quantum circuits. Over the past twenty years, the field has matured from a predominantly basic research endeavor to one that increasingly explores the engineering of larger-scale superconducting quantum systems. Here, we review several foundational elements -- qubit design, noise properties, qubit control, and readout techniques -- developed during this period, bridging fundamental concepts in circuit quantum electrodynamics (cQED) and contemporary, state-of-the-art applications in gate-model quantum computation.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/2540f07e4a1c3b8e3ee48b60ce9bb3f13940ffe2

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Citations in the corpus

Software Mitigation of Crosstalk on Noisy Intermediate-Scale Quantum Computers (2020, background): “QC systems have spatial and temporal noise variations arising frommanufacturing imperfections, imperfections of gate implementation and control, and external interference [30, 44].”
Leakage reduction in fast superconducting qubit gates via optimal control (2020, background): “[2] Krantz, P.”
Quantum Simulators: Architectures and Opportunities (2019, background): “Linear and nonlinear couplings between elements can provide tailor-made interactions [77, 80, 81] for investigating frustrated spin systems, photonphoton interactions, or modelling phase-transitions beyond mean-field theory.”
Challenges and opportunities in quantum optimization (2023, neutral): “However, there is a risk that there is also a classical method (or one could be developed) that takes advantage of the special problem structure or that the instances are of no practical value.”
Quantum Electrodynamics in a Topological Waveguide (2020, background): “While the present work was limited to a one-dimensional system, the stateof-the-art technologies in superconducting quantum circuits [60] utilizing flip-chip methods [55, 56] will enable integration of qubits into two-dimensional metamaterial surfaces.”
Systematic improvements in transmon qubit coherence enabled by niobium surface encapsulation (2023, neutral): “The measurementfollowsthe standard procedure 34 , i.e., thequbitisdrivenfrom thegroundtothe ﬁ rst-excitedstate byacalibrated π pulse.”
QuantumNAS: Noise-Adaptive Search for Robust Quantum Circuits (2021, background): “Operational Noises – In real QC, errors occur due to imperfect control signals, unwanted interactions between qubits, or interference from the environment [11], [32].”
Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe (2022, background): “They are using the collective electromagnetic variables of superconducting circuits [335, 352], building on the character of superconductivity as a robust macroscopic quantum phenomenon in its own right [144].”
Oscillating bound states for a giant atom (2019, background): “[11] P.”
Colloquium : Quantum heat transport in condensed matter systems (2021, positive): “Yet, deviations from the Wiedemann-Franz law due to Coulomb blockade and quantum tunneling were observed in agreement with the theory (Kubala et al., 2008).”
Quantum information processing and quantum optics with circuit quantum electrodynamics (2020, methodology): “This challenge can be met at the software level using ‘transversal’ gates 69 and more generally using error correction at intermediate steps of gates 70 .”