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88 papers
ZZ-Interaction-Free Single-Qubit-Gate Optimization in Superconducting Qubits
Shu Watanabe, Yutaka Tabuchi, Kentaro Heya +2
Overcoming the issue of qubit-frequency fluctuations is essential to realize stable and practical quantum computing with solid-state qubits. Static ZZ interaction, which causes a f…
Systematic Approach for Tuning Flux-driven Josephson Parametric Amplifiers for Stochastic Small Signals
Çağlar Kutlu, Saebyeok Ahn, Sergey V. Uchaikin +5
Many experiments operating at millikelvin temperatures with signal frequencies in the microwave regime are beginning to incorporate Josephson Parametric Amplifiers (JPA) as their f…
Four-channel System for Characterization of Josephson Parametric Amplifiers
Boris I. Ivanov, Jinmyeong Kim, Çağlar Kutlu +8
The axion search experiments based on haloscopes at the Center for Axion and Precision Physics Research (CAPP) of the Institute for Basic Science (IBS) in South Korea are performed…
CAPP Axion Search Experiments with Quantum Noise Limited Amplifiers
Sergey V. Uchaikin, Boris I. Ivanov, Jinmyeong Kim +8
The axion is expected to solve the strong CP problem of quantum chromodynamics and is one of the leading candidates for dark matter. CAPP in South Korea has several axion search ex…
Josephson Parametric Amplifier in Axion Experiments
Jinmyeong Kim, Boris I. Ivanov, Çağlar Kutlu +9
The axion is a hypothetical particle, a promising candidate for dark matter, and a solution to the strong CP problem. Axion haloscope search experiments deal with a signal power co…
All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler
Shotaro Shirai, Yuta Okubo, Kohei Matsuura +3
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 int…