Fig. 3: Ultrafast Förster oscillation.
From: Ultrafast energy exchange between two single Rydberg atoms on a nanosecond timescale
a, Pump–probe sequence. b–e, Probability Pd for the atom to be in state \(\left|d\right\rangle\) after t = 2.29 ns (b,c) or t = 6.51 ns (d,e). The oscillation is shown as a function of R (b,d) or the interaction area \(Jt=\sqrt{2}{C}_{3}t/{R}^{3}\) (c,e). The black curves are parameter-free simulations of the ideal Förster oscillation rescaled by the SPAM errors (dotted lines), including the effect of quantum uncertainty in position (dashed lines) and perturbing interaction channels (solid lines). In e we show the data of all 16 pairs of atoms, whereas this is averaged in b–d. For each R, we repeat the experiment 2,000 times, out of which we select the ~25% of shots where both atoms of a pair are loaded, resulting in a quantum projection noise <3% for each point in e, and <1% in b–d.
