QTCAD (A quantum technology simulation tool for qubits design)

QTCAD (A quantum technology simulation tool for qubits design)

QTCAD (Quantum-Technology Computer-Aided Design) is a finite-element (FEM) simulator used to predict the performance of solid-state spin-qubit devices before their production which is a huge cost-saver enabling to explore many design scenarios.

It calculates the envelope functions and energy levels of electrons or holes confined in nanostructures within k.p theory by solving the Schrödinger and non-linear Poisson equations self-consistently. Those are then used as the basis of several tools to predict qubit performance metrics (please see main upcoming features below).


QTCAD is currently a product under beta testing with a selection of potential users from academia and industry.


Contact us (info@nanoacademic.com) to become a beta-tester and discover how QTCAD can accelerate your projects.


Key features at time of release will include:

  • QTCAD interfaces with our large scale DFT software RESCU for calculating material parameters that enter the k.p theory;
  • An electrostatics tool that solves the confining potential of quantum dots in semiconductor nanostructures under split gates;
  • A valley-splitting calculation tool;
  • An exact diagonalization tool for rigorous treatment of few-electron systems;
  • A master equation solver for quantum transport calculations in the sequential tunneling regime enabling treatment of Coulomb blockade and predicting charge stability diagrams;
  • Our electric-dipole spin resonance module interfaces with QuTiP for time-dependent simulations of quantum control.
  • Arbitrary 2D and 3D device geometries are defined using FEM mesh-generation such as GMSH. Simulations are launched using our user-friendly Python API;
  • Finally, QTCAD solvers work at cryogenic (sub-K) temperatures in many practical designs of solid-state spin qubits, which is a notoriously difficult problem to solve nowadays


Additional features are already under development, stay tuned to our articles, newsletters and posts on our LinkedIn page to not miss anything about Nanoacademic's latest news!