Figure 2 (a) Optical microscope image of the developed π-junction flux qubit. (b) Structure of a Josephson junction made of the all-nitride superconductors. (c) Structure of a π-junction formed on a niobium nitride (NbN) base electrode. (IMAGE)

National Institute of Information and Communications Technology (NICT)

Figure 2 (a) Optical microscope image of the developed π-junction flux qubit. (b) Structure of a Josephson junction made of the all-nitride superconductors. (c) Structure of a π-junction formed on a niobium nitride (NbN) base electrode.

Caption

Figure 2 (a) Optical microscope image of the developed π-junction flux qubit with false color for the clarification. The Josephson junctions (JJ), π-junctions, and via-holes are shown in purple, yellow, and blue, and the circuit diagram on the right shows three Josephson junctions (x, purple) and a π-junction (*, yellow).
(b) Structure of a Josephson junction made of the all-nitride superconductors.
(c) Structure of a π-junction formed on a niobium nitride (NbN) base electrode.

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National Institute of Information and Communications Technology (NICT), NTT Corporation (NTT), Tohoku University and the Tokai National Higher Education and Research System Nagoya University

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