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Characterization of Control in a Superconducting Qutrit Using Randomized Benchmarking
M. Kononenko, M. A. Yurtalan, S. Ren +3
We characterize control of a qutrit implemented in the lowest three energy levels of a capacitively-shunted flux-biased superconducting circuit. Randomized benchmarking over the qu…
Hamiltonian of a flux qubit-LC oscillator circuit in the deep-strong-coupling regime
Fumiki Yoshihara, Sahel Ashhab, Tomoko Fuse +2
We derive the Hamiltonian of a superconducting circuit that comprises a single-Josephson-junction flux qubit inductively coupled to an LC oscillator, and we compare the derived cir…
Nonclassicality of open circuit QED systems in the deep-strong coupling regime
Tomohiro Shitara, Motoaki Bamba, Fumiki Yoshihara +4
We investigate theoretically how the ground state of a qubit-resonator system in the deep-strong coupling (DSC) regime is affected by the coupling to an environment. We employ as a…
Implementation of a Walsh-Hadamard gate in a superconducting qutrit
M. A. Yurtalan, J. Shi, M. Kononenko +2
We have implemented a Walsh-Hadamard gate, which performs a quantum Fourier transform, in a superconducting qutrit. The qutrit is encoded in the lowest three energy levels of a cap…