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

• URL: http://arxiv.org/abs/2302.06930v3
• Date: Sun, 6 Aug 2023 04:31:38 GMT
• Title: All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler
• Authors: Shotaro Shirai, Yuta Okubo, Kohei Matsuura, Alto Osada, Yasunobu Nakamura, Atsushi Noguchi
• Abstract summary: All-microwave control of superconducting quantum computing circuits is advantageous for minimizing the noise channels and wiring costs. We introduce a swap interaction between two data transmons assisted by the third-order nonlinearity of a coupler transmon under a microwave drive.
• Score: 0.685068326729525
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

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