Quantum Filter Diagonalization with Compressed Double-Factorized Hamiltonians
Quantum Filter Diagonalization with Compressed Double-Factorized Hamiltonians
We demonstrate a method that merges the quantum filter diagonalization (QFD) approach for hybrid quantum-classical solution of the time-independent electronic Schrödinger equation with a low-rank double factorization (DF) approach for the representation of the electronic Hamiltonian. In particular, we explore the use of a novel sparse "compressed" double factorization (C-DF) …