The variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm for the preparation of ground states of a given problem Hamiltonian. It exploits parameterized quantum circuits (PQCs) to prepare the ansatz solutions which are…

In this talk I will present the new understanding of quantum foundations based on the concept of quantum (modular) spacetime endowed with manifest non-locality that is consistent with causality.

A well-known thought experiment is revisited in which a delocalized particle is quickly recombined while another particle probes its gravitational field. Assuming the gravitational field is quantum, some tension between causality and complementarity…