Quantum and Classical Solutions

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We offer customized software and perform simulations of superconductors and/or magnets in quantum devices such as qubits and topological qubits.
The main goal of developing this quantum solver was to study individual problems on a microscale in order to perform a self-consistent fitting of a macroscopic Ginzburg-Ludndau type solver, i.e., our “classical” solver Excalibur. One example of such bridging is the clarification of additional boundary conditions, see PhysRevB.103.224516 (Open Access) paper.
We are grateful to VINNOVA (the Swedish Governmental Agency for Innovation Systems) for their support of this project.

Main features of our solutions:

• Calculations are accelerated and visualized due to the use of NVIDIA CUDA and OpenGL technologies, which in turn means that calculations can be carried out on a desktop computer with a real-time graphic interface.
• Superconducting condensate is treated within quantum field theory including self-consistent mean-field theory a.k.a. Bogoliubov-de Gennes model.
• We use the pseudo-spectral method with bases like harmonic series or orthogonal polynomials.
• Eigendecomposition subroutine is based on one of the best-known algorithms “Divide-and-conquer”.

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