A Long-lived Tunable Qubit for Bosonic Quantum Computing
Leonid Victorovich Abdurakhimov, Imran Mahboob, Hiraku Toida +2 more
This article reviews a recent experiment that demonstrated a new hybrid type of tunable superconducting qubit consisting of a two-dimensional (2D) superconducting capacitively shunted flux qubit coupled to a 3D microwave cavity.Such a 3D hybrid flux qubit has extremely long relaxation times, which are comparable to or exceed the best values reported for 2D flux qubits.This new design of frequency-tunable qubits is uniquely suited for applications in bosonic quantum computing, which exploits multiphoton states of 3D microwave cavities.
NTT technical review•May 1, 2021•2 citations