Fast, high-fidelity addressed single-qubit gates using efficient composite pulse sequences

AD Leu, MF Gely, MA Weber, MC Smith… - Physical Review Letters, 2023 - APS
We use electronic microwave control methods to implement addressed single-qubit gates
with high speed and fidelity, for Ca+ 43 hyperfine “atomic clock” qubits in a cryogenic (100 …

How to Wire a -Qubit Trapped-Ion Quantum Computer

M Malinowski, DTC Allcock, CJ Ballance - PRX Quantum, 2023 - APS
One of the most formidable challenges of scaling up quantum computers is that of control-
signal delivery. Today's small-scale quantum computers typically connect each qubit to one …

Identification of an X-Band Clock Transition in Cp′3Pr Enabled by a 4f25d1 Configuration

PW Smith, J Hrubý, WJ Evans, S Hill… - Journal of the …, 2024 - ACS Publications
Molecular qubits offer an attractive basis for quantum information processing, but challenges
remain with regard to sustained coherence. Qubits based on clock transitions offer a method …

Scalable, high-fidelity all-electronic control of trapped-ion qubits

CM Löschnauer, JM Toba, AC Hughes, SA King… - ar** field at
their location is often undesirable and is usually carefully minimized. Here, we induce …

Low cross-talk optical addressing of trapped-ion qubits using a novel integrated photonic chip

AS Sotirova, B Sun, JD Leppard, A Wang… - Light: Science & …, 2024 - nature.com
Individual optical addressing in chains of trapped atomic ions requires the generation of
many small, closely spaced beams with low cross-talk. Furthermore, implementing parallel …

Dressing trapped ions with integrated wires

RT Sutherland - Physical Review A, 2024 - APS
We discuss dressing trapped ions with the near field of a trap integrated wire. Ram** a
dressing field on or off adiabatically before or after an operation changes its effective …

Focusing of quantum gate interactions using dynamical decoupling

MC Smith, AD Leu, MF Gely, DM Lucas - arxiv preprint arxiv:2309.02125, 2023 - arxiv.org
In 1995, Cirac and Zoller proposed the first concrete implementation of a small-scale
quantum computer, using laser beams focused to micron spot sizes to address individual …

Ion-Based Quantum Computing Hardware: Performance and End-User Perspective

T Strohm, K Wintersperger, F Dommert… - arxiv preprint arxiv …, 2024 - arxiv.org
This is the second paper in a series of papers providing an overview of different quantum
computing hardware platforms from an industrial end-user perspective. It follows our first …