All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler

Abstract

All-microwave control of fixed-frequency superconducting quantum computing circuits is advantageous for minimizing the noise channels and wiring costs. Here we introduce a swap interaction between two data transmons assisted by the third-order nonlinearity of a coupler transmon under a microwave drive. We model the interaction analytically and numerically and use it to implement an all-microwave controlled-Z gate. The gate based on the coupler-assisted swap transition maintains high drive efficiency and small residual interaction over a wide range of detuning between the data transmons.

12 pages, 8 figures

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Cited by in corpus (8)

• Realization of High-Fidelity CZ Gate based on a Double-Transmon Coupler
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• Microwave-activated high-fidelity three-qubit gate scheme for fixed-frequency superconducting qubits
• High-$Q$ membrane resonators using ultra-high-stress crystalline TiN films
• Sparse Non-Markovian Noise Modeling of Transmon-Based Multi-Qubit Operations
• High-performance conditional-driving gate for Kerr parametric oscillator qubits
• Overhead in Quantum Circuits with Time-Multiplexed Qubit Control
• Physically motivated decompositions of single-qutrit gates