title: Micro-fabricated stylus ion trap.
abstract: An electroformed, three-dimensional stylus Paul trap was designed to confine a single atomic ion for use as a sensor to probe the electric-field noise of proximate surfaces. The trap was microfabricated with the UV-LIGA technique to reduce the distance of the ion from the surface of interest. We detail the fabrication process used to produce a 150 μm tall stylus trap with feature sizes of 40 μm. We confined single, laser-cooled, (25)Mg(+) ions with lifetimes greater than 2 h above the stylus trap in an ultra-high-vacuum environment. After cooling a motional mode of the ion at 4 MHz close to its ground state (<n> = 0.34 ± 0.07), the heating rate of the trap was measured with Raman sideband spectroscopy to be 387 ± 15 quanta/s at an ion height of 62 μm above the stylus electrodes.
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87123, USA.
authors.forename: Christian L
authors.initials: CL
authors.lastname: Arrington
authors.forename: Kyle S
authors.initials: KS
authors.lastname: McKay
authors.forename: Ehren D
authors.initials: ED
authors.lastname: Baca
authors.forename: Jonathan J
authors.initials: JJ
authors.lastname: Coleman
authors.forename: Yves
authors.initials: Y
authors.lastname: Colombe
authors.forename: Patrick
authors.initials: P
authors.lastname: Finnegan
authors.forename: Dustin A
authors.initials: DA
authors.lastname: Hite
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Hollowell
authors.forename: Robert
authors.initials: R
authors.lastname: Jördens
authors.forename: John D
authors.initials: JD
authors.lastname: Jost
authors.forename: Dietrich
authors.initials: D
authors.lastname: Leibfried
authors.forename: Adam M
authors.initials: AM
authors.lastname: Rowen
authors.forename: Ulrich
authors.initials: U
authors.lastname: Warring
authors.forename: Martin
authors.initials: M
authors.lastname: Weides
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Wilson
authors.forename: David J
authors.initials: DJ
authors.lastname: Wineland
authors.forename: David P
authors.initials: DP
authors.lastname: Pappas