All-Microwave Manipulation of Superconducting Qubits with a Fixed-Frequency Transmon Coupler

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 dri...

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Veröffentlicht in:Physical review letters 2023-06, Vol.130 (26), p.260601-260601, Article 260601
Hauptverfasser: Shirai, Shotaro, Okubo, Yuta, Matsuura, Kohei, Osada, Alto, Nakamura, Yasunobu, Noguchi, Atsushi
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Sprache:eng
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Zusammenfassung: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.130.260601