Evolution of Nanowire Transmon Qubits and Their Coherence in a Magnetic Field
Evolution of Nanowire Transmon Qubits and Their Coherence in a Magnetic Field
We present an experimental study of flux- and gate-tunable nanowire transmons with state-of-the-art relaxation time allowing quantitative extraction of flux and charge noise coupling to the Josephson energy. We evidence coherence sweet spots for charge, tuned by voltage on a proximal side gate, where first order sensitivity to switching two-level …