31 citations · 73 across the 8 of their papers we have counts for
8 papers
Microwave-driven same-species sympathetic cooling for trapped ions
M. C. Smith, E. Vandrey, A. D. Leu +5
Sympathetic cooling of data qubits by coolant ions is an essential technique for trapped-ion quantum computing. Conventionally a second ion species is used, requiring additional la…
Quantum Nonlocal Games on Graph Ensembles
Joshua Tucker, Chris Weeks, Peter Drmota +11
Quantum entanglement is one of the most striking discoveries in all of science. This effect allows, for instance, two spatially separated agents to coordinate their actions, withou…
Single-qubit gates with errors at the level
M. C. Smith, A. D. Leu, K. Miyanishi +2
We report the achievement of single-qubit gates with sub-part-per-million error rates, in a trapped-ion Ca hyperfine clock qubit. We explore the speed/fidelity trade-o…
Polarisation-insensitive state preparation for trapped-ion hyperfine qubits
A. D. Leu, M. C. Smith, M. F. Gely +1
Quantum state preparation for trapped-ion qubits often relies on high-quality circularly-polarised light, which may be difficult to achieve with chip-based integrated optics techno…
Robust and fast microwave-driven quantum logic for trapped-ion qubits
M. A. Weber, M. F. Gely, R. K. Hanley +5
Microwave-driven logic is a promising alternative to laser control in scaling trapped-ion based quantum processors. However, such electronic gates have yet to match the speed offer…
In-situ characterization of qubit drive-phase distortions
M. F. Gely, J. M. Litarowicz, A. D. Leu +1
Reducing errors in quantum gates is critical to the development of quantum computers. To do so, any distortions in the control signals should be identified, however, conventional t…
Individually-addressed quantum gate interactions using dynamical decoupling
M. C. Smith, A. D. Leu, M. F. Gely +1
A leading approach to implementing small-scale quantum computers has been to use laser beams, focused to micron spot sizes, to address and entangle trapped ions in a linear crystal…
Cryogenic ion trap system for high-fidelity near-field microwave-driven quantum logic
M. A. Weber, C. Löschnauer, J. Wolf +6
We report the design, fabrication, and characterization of a cryogenic ion trap system for the implementation of quantum logic driven by near-field microwaves. The trap incorporate…