Table 1 Phase settings for the on-chip preparation of all six eigenstates of the three Pauli operators and all four Bell states.
State/basis | \(\phi _\text {P11}\) | \(\phi _\text {P12}\) | \(\phi _\text {P21}\) | \(\phi _\text {P22}\) | \(\phi _\text {PCR}\) | \(\phi _\text {P23}\) | Fidelity (%) | Purity (%) |
|---|---|---|---|---|---|---|---|---|
\(|H,V\rangle\) | \(\pi\) | 0 | 0 | 0 | \(\pi\) | \(\pi\) | 99.274(15) | 99.98(3) |
\(|+,-\rangle\) | \(\pi /2\) | \(\pi\) | \(\pi /2\) | 0 | \(\pi\) | \(\pi\) | 99.553(14) | 99.40(3) |
\(|+_\text {i},-_\text {i}\rangle\) | \(\pi /2\) | \(3\pi /2\) | \(\pi /2\) | \(\pi /2\) | \(\pi\) | \(\pi\) | 99.13(2) | 98.84(5) |
\(|\Phi ^+\rangle\) | \(\pi /2\) | \(\pi\) | \(\pi /2\) | 0 | 0 | 0 | 98.13(7) | 97.70(14) |
\(|\Phi ^-\rangle\) | \(\pi /2\) | 0 | \(\pi /2\) | 0 | 0 | 0 | 97.00(7) | 98.09(15) |
\(|\Psi ^+\rangle\) | \(\pi /2\) | 0 | \(\pi /2\) | 0 | 0 | \(\pi\) | 98.25(6) | 98.36(13) |
\(|\Psi ^-\rangle\) | \(\pi /2\) | \(\pi\) | \(\pi /2\) | 0 | 0 | \(\pi\) | 97.39(7) | 97.57(15) |
\(|C\rangle\) | \(\pi /2\) | 0 | \(\pi /2\) | 0 | 0 | \(\pi /2\) | 90.0(16) | 91(3) |
XX | \(\pi /2\) | 0 | \(\pi /2\) | 0 | \(\pi\) | \(\pi\) | - | - |
YY | \(\pi /2\) | \(\pi /2\) | \(\pi /2\) | \(\pi /2\) | \(\pi\) | \(\pi\) | - | - |
ZZ | \(\pi\) | 0 | \(\pi\) | 0 | \(\pi\) | \(\pi\) | - | - |
