A Ramsey-type interferometry method that extracts the absolute ground-state energy from the frequency of oscillations between the ground state and a symmetry-adapted reference state, avoiding controlled time evolutions.
Here, we consider the case where ˆQ = ˆM, which clearly commutes with both ˆHD and ˆHP
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Robust phase estimation of the ground-state energy without controlled time evolution on a quantum device
A Ramsey-type interferometry method that extracts the absolute ground-state energy from the frequency of oscillations between the ground state and a symmetry-adapted reference state, avoiding controlled time evolutions.