In 2019, Google claimed that they have achieved quantum supremacy/advantage with their 53 qubit quantum processor Sycamore. The paper is here. But I have not even been able to find what their algorithm is called. I know that is just a sampling problem. How would I go to create a similar sampling for a smaller circuit (say 5 qubits) using Qiskit?
I have checked this good 3-part series of questions Understanding Google's “Quantum supremacy using a programmable superconducting processor” (Part 1): choice of gate set. Yet I am still unable to understand from where to start. Does Qiskit have predetermined functions for this purpose? Especially on how would I go to confirm it out later? My key issue here is that I do not know the name of the algorithm so I only have Google experiment related sources.
I am not concerned with the issue that they may have achieved quantum supremacy or not.