Digital quantum simulation of strong correlation effects with iterative quantum phase estimation over the variational quantum eigensolver algorithm: ${\mathrm{H}}_4$ on a circle as a case study

Dipanjali Halder, Srinivasa Prasannaa V., Valay Agarawal +1

The iterative quantum phase estimation algorithm, applied to calculating the ground state energies of quantum chemical systems, is theoretically appealing in its wide scope of bein…