139 citations · 497 across the 11 of their papers we have counts for
11 papers
Observation of a Topological Berry Phase with a Single Phonon in an Ion Microtrap Array
Justin F. Niedermeyer, Nathan K. Lysne, Katherine C. McCormick +11
Controlled quantum mechanical motion of trapped atomic ions can be used to simulate and explore collective quantum phenomena and to process quantum information. Groups of cold atom…
Quantum harmonic oscillator spectrum analyzers
Jonas Keller, Pan-Yu Hou, Katherine C. McCormick +5
Characterization and suppression of noise are essential for the control of harmonic oscillators in the quantum regime. We measure the noise spectrum of a quantum harmonic oscillato…
Coherently displaced oscillator quantum states of a single trapped atom
Katherine C. McCormick, Jonas Keller, David J. Wineland +2
Coherently displaced harmonic oscillator number states of a harmonically bound ion can be coupled to two internal states of the ion by a laser-induced motional sideband interaction…
Quantum-enhanced sensing of a mechanical oscillator
Katherine C. McCormick, Jonas Keller, Shaun C. Burd +3
The use of special quantum states to achieve sensitivities below the limits established by classically behaving states has enjoyed immense success since its inception. In bosonic i…
An avalanche transistor-based nanosecond pulse generator with 25 MHz repetition rate
N. Beev, J. Keller, T. E. Mehlstäubler
We have developed an avalanche transistor-based pulse generator for driving the photocathode of an image intensifier, which comprises a mainly capacitive load on the order of 100 p…
Probing Time Dilation in Coulomb Crystals in a high-precision Ion Trap
J. Keller, D. Kalincev, T. Burgermeister +5
Trapped-ion optical clocks are capable of achieving systematic fractional frequency uncertainties of and possibly below. However, the stability of current ion clocks is…