3 papers
quant-ph2026
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…
quant-ph2024
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…
quant-ph2024
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…