title: Active stabilization of ion trap radiofrequency potentials.
abstract: We actively stabilize the harmonic oscillation frequency of a laser-cooled atomic ion confined in a radiofrequency (rf) Paul trap by sampling and rectifying the high voltage rf applied to the trap electrodes. We are able to stabilize the 1 MHz atomic oscillation frequency to be better than 10 Hz or 10 ppm. This represents a suppression of ambient noise on the rf circuit by 34 dB. This technique could impact the sensitivity of ion trap mass spectrometry and the fidelity of quantum operations in ion trap quantum information applications.
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: K G
authors.initials: KG
authors.lastname: Johnson
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Wong-Campos
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: A
authors.initials: A
authors.lastname: Restelli
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Landsman
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: B
authors.initials: B
authors.lastname: Neyenhuis
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: J
authors.initials: J
authors.lastname: Mizrahi
authors.affiliation: Joint Quantum Institute and University of Maryland Department of Physics, College Park, Maryland 20742, USA.
authors.forename: C
authors.initials: C
authors.lastname: Monroe