Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …

The trapped-ion system has been a leading platform for practical quantum computation and
quantum simulation since the first scheme of a quantum gate was proposed by Cirac and …

State-of-the-art noisy digital quantum computers can only execute short-depth quantum
circuits. Variational algorithms are a promising route to unlock the potential of noisy quantum …

High-fidelity two-qubit gates in quantum computers are often hampered by fluctuating
experimental parameters. The effects of time-varying parameter fluctuations lead to coherent …

Two-qubit gates in trapped-ion quantum computers are generated by applying spin-
dependent forces that temporarily entangle the internal state of the ion with its motion. Laser …

A major obstacle in the way of practical quantum computing is achieving scalable and robust
high-fidelity entangling gates. To this end, quantum control has become an essential tool, as …

Entangling gates are an essential component of quantum computers. However, generating
high-fidelity gates, in a scalable manner, remains a major challenge in all quantum …

Quantum computers promise to solve models of important physical processes, optimize
complex cost functions, and challenge cryptography in ways that are intractable using …

Qubits encoded in hyperfine states of trapped ions are ideal for quantum computation given
their long lifetimes and low sensitivity to magnetic fields, yet they suffer from off-resonant …

The ability to perform entangling operations in parallel with a low error is essential for a
large-scale fault-tolerant quantum computer. However, for trapped-ion systems, it is a …