Table 1 Overlaps between ADAPT-GCIM and exact ground-state vectors (machine precision is 2.22 × 10−16)

From: Unleashed from constrained optimization: quantum computing for quantum chemistry employing generator coordinate inspired method

Molecule

\(1-| {\langle {\psi }_{GCIM}| {\psi }_{exact}\rangle }|^{2}\)

H4 (linear)

2.22 × 10−16

H4 (square)

< 2.22 × 10−16

LiH

2.22 × 10−16

BeH2

2.22 × 10−15

H6 (1.0584 Å)

1.55 × 10−15

H6 (1.8521 Å)

2.66 × 10−15

H6 (5.0000 Å)

2.42 × 10−2

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