Table 1 Infidelity channels for odd and even parity Bell states stabilization
From: Autonomous stabilization with programmable stabilized state
Stabilized state infidelity | \(\left\vert {\Phi }_{-}\right\rangle\) | \(\left\vert {\Psi }_{-}\right\rangle\) |
|---|---|---|
Ideal implementation | 1.71% | 4.98% |
Transmon T1 | 7.56% | 5.25% |
Transmon dephasing | 3.14% | 2.21% |
\(\left\vert f\right\rangle\) state leakage | ∽ 0.1% | ∽ 0.1% |
ZZ interactions | 0.85% | 0.98% |
Thermal excitation* | ∽ 2.0% | ∽ 2.0% |
QR frequency mismatch† | <0.18% | <0.57% |
QQ frequency mismatch† | <0.1% | <0.1% |
Total predicted fidelity | ∽ 15.64% | ∽ 16.19% |
Experimental infidelity | 15.4% | 17.5% |
