First observation of superconducting flux qubit in the QCT lab

The QCT group at IFAE has observed the existence of the first superconducting flux qubit. This is a milestone for the group.These are the kind of chips that are of interest for quantum computing with quantum annealing, quantum optics and detection.

The chip was designed at IFAE and manufactured in Glasgow. The group will soon characterize its spectrum and lifetime.

The image shown is an unequivocal sign of the presence of the qubit. The horizontal line is the resonance frequency of the resonator that is used to detect the qubit. The slight shift in the resonance frequency of the resonator is due to the the hybridization of the eigenstates of the qubit and the resoantor.

Boris Nedyalkov
PhD student at IFAE