Posts

Variational algorithms suffer from Barren Plateaus, a phenomenon that flatten the optimisation landscape. But what are the implications of such a phenomenon on practical algorithms?

Variational algorithms are non-convex global optimisation problems. Finding the global minimum of such a problem has resisted 50 years of research. So variational algorithms might not be the solution after all.

For the year 2024 I will try to be more consistent with the blog posts and speak about new subjects in quantum computing.

Variational algorithms use parameterized circuits to encode the potential solutions. This brings a whole new world of issues on the table.

Most of the quantum PDE solvers encode the solution in the quantum state amplitudes. This encoding poses a serious limitation on what data can be retrieved from the quantum computer.