Table 7 Projected systematic shifts for the \(\text{N}_{2}^{+}\) clock
From: Measuring the stability of fundamental constants with a network of clocks
Effect | Conditions | Fractional uncertainty |
|---|---|---|
Electric quadrupole shift | Â | 0 |
Zeeman shift | Â | 0 |
DC Stark shift | Typical electric fields in an ion trap after micromotion compensation | 1 × 10−20 |
Blackbody shift | δT<250 mK at 300 K | 3 × 10−21 |
Doppler shift | Doppler cooling limit of Ca+ | 2 × 10−18 |
Raman laser | 1% intensity stability | 3.4 × 10−18 |