93 citations · 285 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…
Robust Two-Qubit Geometric Phase Gates using Amplitude and Frequency Ramping
Christina Bowers, Deviprasath Palani, John Barta +4
We demonstrate a method for generating entanglement between trapped atomic ions based on adiabatically ramped state-dependent forces. By ramping both the amplitude of the state-dep…
Fast Ground State to Ground State Separation of Small Ion Crystals
Tyler H. Guglielmo, Dietrich Leibfried, Stephen B. Libby +1
Rapid separation of linear crystals of trapped ions into different subsets is critical for realizing trapped ion quantum computing architectures where ions are rearranged in trap a…
Individual Addressing and State Readout of Trapped Ions Utilizing Radio-Frequency Micromotion
Nathan K Lysne, Justin F Niedermeyer, Andrew C Wilson +2
Excess "micromotion" of trapped ions due to the residual radio-frequency (rf) trapping field at their location is often undesirable and is usually carefully minimized. Here, we ind…
VECSEL systems for quantum information processing with trapped beryllium ions
S. C. Burd, J. -P. Penttinen, P. -Y. Hou +8
Two vertical-external-cavity surface-emitting laser (VECSEL) systems producing ultraviolet (UV) radiation at 235 nm and 313 nm are demonstrated. The systems are suitable for quantu…
Ion transport and reordering in a two-dimensional trap array
Y. Wan, R. Jördens, S. D. Erickson +7
Scaling quantum information processors is a challenging task, requiring manipulation of a large number of qubits with high fidelity and a high degree of connectivity. For trapped i…
Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity
D. A. Hite, K. S. McKay, S. Kotler +3
Electric-field noise from the surfaces of ion-trap electrodes couples to the ion's charge causing heating of the ion's motional modes. This heating limits the fidelity of quantum g…
Decoherence-assisted spectroscopy of a single Mg ion
Govinda Clos, Martin Enderlein, Ulrich Warring +2
We describe a high-resolution spectroscopy method, in which the detection of single excitation events is enhanced by a complete loss of coherence of a superposition of two ground s…
Individual-Ion Addressing with Microwave Field Gradients
U. Warring, C. Ospelkaus, Y. Colombe +3
Individual-qubit addressing is a prerequisite for many instances of quantum information processing. We demonstrate this capability on trapped-ion qubits with microwave near-fields…
Improved high-fidelity transport of trapped-ion qubits through a multi-dimensional array
R. B. Blakestad, C. Ospelkaus, A. P. VanDevender +4
We have demonstrated transport of Be+ ions through a 2D Paul-trap array that incorporates an X-junction, while maintaining the ions near the motional ground-state of the confining…
Individual addressing and state readout of trapped ions utilizing rf- micromotion
D. Leibfried
A new scheme for the individual addressing of ions in a trap is described that does not rely on light beams tightly focused onto only one ion. The scheme utilizes ion micromotion t…