QuESTlink is a wonderful and extremely useful tool when it comes to testing, understanding or developing quantum algorithms. It is a Mathematica interface that lets its users to take full advantage of the highly efficient QuEST code without resorting to writing low-level C code: see our blogpost here.
We have collected a number of Mathematica notebooks that demonstrate a variety of quantum algorithms; we can interactively simulate these circuits with the use of QuESTlink. Our collection of demo notebooks can be found here, and, for example, includes the following algorithms:
- quantum addition circuit (notebook, pdf): contains functions that create an addition circuit performing A, B — > A+B, B. The method is that of Draper’s from [arXiv:0008033] and it uses the Quantum Fourier Transform
- variational quantum eigensolving (notebook, pdf): a demonstration of calculating the experimental quantities used in variational algorithms, and simulating imaginary time minimisation.
- derangement circuits (notebook, pdf): simulating the Error Suppression by Derangements [arXiv:2011.05942] and Virtual Distillation [arXiv:2011.07064] error mitigation techniques by constructing SWAP circuits and applying them to copies of noisy quantum states
Please also visit our webpage later, we plan to further expand the library!
