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All lasers are stabilized via a software lock to a High Finesse WSU-2 wavemeter39. Reported hyperfine measurements (see Supplementary Information) include a systematic uncertainty of 20 MHz due to unresolved Zeeman structure. For isotope shifts, the relevant 133Ba+ centroid frequency is determined...
before high-fidelity qubit operations can be performed, a number of unknown state energies are needed. Here, we report measurements of the2P3/2and2D5/2hyperfine splittings, as well as the2P3/2 ↔ 2S1/2and2
Methods iSCAT microscope. In iSCAT microscope, illumination in wide field was made by focusing a 532 nm laser beam (Finesse Pure, Laser Quantum) at the back focal plane of a high NA microscope objective (UPLSAPO 100X, NA 1.4 Olympus). Part of the excitation (~0.6%) was reflected ...
A difference between signal and idler pulse durations results from a larger cavity finesse of the NesCOPO at the signal wavelength. 5000 4000 idler signal 3000 2000 1000 0 -10 0 10 20 time [ns] Figure 6. The calculated output pulse shape of the NesCOPO at the signal (blue) and idler ...