Experimental realization of a rotating radio-frequency ion trap for precision metrology

We discuss the experimental realization of the rotating radio-frequency (rrf) trap, proposed by Hasegawa and Bollinger [Phys.

Rev.

A 72, 043403 (2005)].

Compared to a traditional linear rf (lrf) Paul trap, the rrf trap is a closer analogy to the popular mechanical lecture demonstration for a Paul trap.

In an ion trap with reslistic, non-ideal electrode geometry, the rrf trap averages over angular variations in the effective potential.

This averaging provides more uniform confinement and reduces ion loss at equal confinement strength compared with the lrf trap.

This feature makes the rrf trap configuration advantageous for precision metrology application, such as electron electric dipole moment (eEDM) measurements.