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High-Fidelity, Single-Shot, Quantum-Logic-Assisted Readout in a Mixed-Species Ion Chain
Colin Bruzewicz, Robert McConnell, Jonathon Sedlacek +4
We use a co-trapped ion () to sympathetically cool and measure the quantum state populations of a memory-qubit ion of a different atomic species ($^{40}\mathr…
Heisenberg scaling of imaging resolution by coherent enhancement
Robert McConnell, Guang Hao Low, Theodore J. Yoder +4
Classical imaging works by scattering photons from an object to be imaged, and achieves resolution scaling as , with the imaging time. By contrast, the laws of quan…
Scalable Loading of a Two-Dimensional Trapped-Ion Array
C. D. Bruzewicz, R. McConnell, J. Chiaverini +1
We describe rapid, random-access loading of a two-dimensional (2D) surface-electrode ion-trap array based on two crossed photo-ionization laser beams. With the use of a continuous…
Integrated optical addressing of an ion qubit
Karan K. Mehta, Colin D. Bruzewicz, Robert McConnell +3
The long coherence times and strong Coulomb interactions afforded by trapped ion qubits have enabled realizations of the necessary primitives for quantum information processing (QI…
Reduction of trapped ion anomalous heating by in situ surface plasma cleaning
Robert McConnell, Colin Bruzewicz, John Chiaverini +1
Anomalous motional heating is a major obstacle to scalable quantum information processing with trapped ions. While the source of this heating is not yet understood, several previou…
Measurement of Ion Motional Heating Rates over a Range of Trap Frequencies and Temperatures
C. D. Bruzewicz, J. M. Sage, J. Chiaverini
We present measurements of the motional heating rate of a trapped ion at different trap frequencies and temperatures between 0.6 and 1.5 MHz and 4 and 295 K. Additional…