Superconducting qubit circuits are one of the prime candidates for building the quantum computer. In this guide I will provide a complete microwave description of the superconducting qubit circuits consisting of the most popular superconducting qubit the "Transmon". Quantum interaction rate parameters related to simple impedance response formulas will allow microwave engineers to design and analyze superconducting qubit circuits without resorting to heavy machinery of quantum mechanical transformations. All formulas listed below are valid in the dispersive regime of low anharmonicity qubits. This work is a review of [1].Superconducting qubit circuits are one of the prime candidates for building the quantum computer. In this guide I will provide a complete microwave description of the superconducting qubit circuits consisting of the most popular superconducting qubit the "Transmon". Quantum interaction rate parameters related to simple impedance response formulas will allow microwave engineers to design and analyze superconducting qubit circuits without resorting to heavy machinery of quantum mechanical transformations. All formulas listed below are valid in the dispersive regime of low anharmonicity qubits. This work is a review of [1].

IEEE MTT-S International Microwave Symposium digestJun 1, 20195 citations

Engineering Framework for Optimizing Superconducting Qubit Designs

Fei Yan, Youngkyu Sung, Philip Krantz +6 more

Superconducting quantum technologies require qubit systems whose properties meet several often conflicting requirements, such as long coherence times and high anharmonicity. Here, we provide an engineering framework based on a generalized superconducting qubit model in the flux regime, which abstracts multiple circuit design parameters and thereby supports design optimization across multiple qubit properties. We experimentally investigate a special parameter regime which has both high anharmonicity ( $\sim\!1$ GHz) and long quantum coherence times ( $T_1\!=\!40\!-\!80\,\mathrm{μs}$ and $T_\mathrm{2Echo}\!=\!2T_1$ ).Superconducting quantum technologies require qubit systems whose properties meet several often conflicting requirements, such as long coherence times and high anharmonicity. Here, we provide an engineering framework based on a generalized superconducting qubit model in the flux regime, which abstracts multiple circuit design parameters and thereby supports design optimization across multiple qubit properties. We experimentally investigate a special parameter regime which has both high anharmonicity ($\sim\!1$GHz) and long quantum coherence times ($T_1\!=\!40\!-\!80\,\mathrm{μs}$ and $T_\mathrm{2Echo}\!=\!2T_1$).

arXiv:2006.04130Jun 7, 202021 citations

Progress and Challenges for Engineering Superconducting Qubits

William D. Oliver

Bulletin of the American Physical SocietyMar 5, 20180 citations

Towards a Faster Development of Superconducting Quantum Systems Using Electronic Design Automation

Mohamed H. Awida, Chris Mueth

Superconducting qubits represent a highly promising and scalable quantum hardware technology. The design of these qubits follows a typical microwave circuit design process, where the circuit encompasses multiple resonance frequencies associated with both the resonators and the qubits. Chip design involves the meticulous engineering of resonators and qubits to align the circuit’s various frequencies with predefined values. Additionally, adjusting the coupling between resonators and qubits is essential to meet specific quantum parameters. As the demand for scaling to thousands of qubits grows, it becomes imperative to incorporate systematic engineering and design automation. In this article, we will explore the present requirements for electronic design automation (EDA) that shall enable the design of future superconducting quantum computers.Superconducting qubits represent a highly promising and scalable quantum hardware technology. The design of these qubits follows a typical microwave circuit design process, where the circuit encompasses multiple resonance frequencies associated with both the resonators and the qubits. Chip design involves the meticulous engineering of resonators and qubits to align the circuit’s various frequencies with predefined values. Additionally, adjusting the coupling between resonators and qubits is essential to meet specific quantum parameters. As the demand for scaling to thousands of qubits grows, it becomes imperative to incorporate systematic engineering and design automation. In this article, we will explore the present requirements for electronic design automation (EDA) that shall enable the design of future superconducting quantum computers.

IEEE Microwave MagazineSep 3, 20252 citations

Superconducting Qubits in Quantum Electronics

Shreya, Bhawna, Sukhvir Singh +1 more

Springer eBooksJan 1, 20261 citation

\sim\!1

GHz) and long quantum coherence times (

T_1\!=\!40\!-\!80\,\mathrm{μs}

and

T_\mathrm{2Echo}\!=\!2T_1