165 citations · 366 across the 6 of their papers we have counts for
6 papers
Helios: A 98-qubit trapped-ion quantum computer
Anthony Ransford, M. S. Allman, Jake Arkinstall +183
We report on Quantinuum Helios, a 98-qubit trapped-ion quantum processor based on the quantum charge-coupled device (QCCD) architecture. Helios features Ba hyperfine…
Scalable Multispecies Ion Transport in a Grid-Based Surface-Electrode Trap
Robert D. Delaney, Lucas R. Sletten, Matthew J. Cich +13
Quantum processors based on linear arrays of trapped ions have achieved exceptional performance, but scaling to large qubit numbers requires realizing two-dimensional ion arrays as…
Minimally-diffracting quartz for ultra-low temperature surface acoustic wave resonators
Alec L. Emser, Brendon C. Rose, Lucas R. Sletten +2
We simulate and experimentally demonstrate the existence of an orientation of quartz which minimizes diffraction losses in surface acoustic wave (SAW) resonators at ultra-low tempe…
High fidelity state preparation and measurement of ion hyperfine qubits with I > 1/2
Fangzhao Alex An, Anthony Ransford, Andrew Schaffer +4
We present a method for achieving high fidelity state preparation and measurement (SPAM) using trapped ion hyperfine qubits with nuclear spins higher than . The ground sta…
Resolving Phonon Fock States in a Multimode Cavity with a Double-Slit Qubit
Lucas R. Sletten, Bradley A. Moores, Jeremie J. Viennot +1
We resolve phonon number states in the spectrum of a superconducting qubit coupled to a multimode acoustic cavity. Crucial to this resolution is the sharp frequency dependence in t…
Cavity quantum acoustic device in the multimode strong coupling regime
Bradley A. Moores, Lucas R. Sletten, Jeremie J. Viennot +1
We investigate an acoustical analog of circuit quantum electrodynamics that facilitates compact high-Q () microwave-frequency cavities with dense spectra. We fabricate a…