High temperature superconducting quantum bits and methods of fabrication

Abstract

The present disclosure relates to a high temperature superconducting qubit and a method of fabrication. A high temperature superconducting qubit is adapted to implement a quantum mechanical two-level system. The high temperature superconducting qubit comprises a first superconductor, a second superconductor, and an overlap region. The first superconductor comprises a first high temperature superconductor material comprising a first surface and a first orientation. The second superconductor comprises a second high temperature superconductor material comprising a second surface and a second orientation. In the overlap region, at least a first section of the first surface overlaps with at least a second section of the second surface, the first section and the second section are arranged in parallel at a distance corresponding to a predefined distance, and the first orientation and the second orientation are arranged at an angle corresponding to a predefined angle. The high temperature superconducting qubit comprises a Josephson junction between the first high temperature superconductor material and the second high temperature superconductor material. The Josephson junction is adapted to provide the quantum mechanical two-level system of the high temperature superconducting qubit.

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