Extended Data Fig. 2: Beryllium ion fluorescence during one preparation–spectroscopy cycle. | Nature

Extended Data Fig. 2: Beryllium ion fluorescence during one preparation–spectroscopy cycle.

From: Precise test of quantum electrodynamics and determination of fundamental constants with HD+ ions

Extended Data Fig. 2

Spectroscopy (terahertz wave on) occurs during the interval marked ‘REMPD’. Beryllium laser cooling is on all the time. SE, secular excitation. B, a magnetic flux strength B is applied during REMPD. B0, a strength B0 is applied for rotational laser cooling. CPS, counts per second. The signal obtained from the spectroscopy cycle is indicated in cyan.

Back to article page