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Thermal and Residual Excited-State Population in a 3D Transmon Qubit
X. Y. Jin, A. Kamal, A. P. Sears +9
We present a systematic study of the first excited-state population in a 3D transmon qubit mounted in a dilution refrigerator with a variable temperature. Using a modified version…
Coherence and Decay of Higher Energy Levels of a Superconducting Transmon Qubit
Michael J. Peterer, Samuel J. Bader, Xiaoyue Jin +7
We present measurements of coherence and successive decay dynamics of higher energy levels of a superconducting transmon qubit. By applying consecutive -pulses for each sequenti…
Flux qubit noise spectroscopy using Rabi oscillations under strong driving conditions
Fumiki Yoshihara, Yasunobu Nakamura, Fei Yan +4
We infer the high-frequency flux noise spectrum in a superconducting flux qubit by studying the decay of Rabi oscillations under strong driving conditions. The large anharmonicity…