Strong-coupling quantum logic of trapped ions

Abstract

Essentially all known quantum gates rely on a weak-coupling approximation resulting in linear dynamics. With the explicit example of trapped ions, we show how high-fidelity quantum gates can be achieved outside such an approximation, and we derive readily implementable driving fields to realize gates with extremely high fidelities for ions well outside the Lamb-Dicke regime with motional temperatures achievable by only Doppler cooling.

4 pages and supplement, 3 figures

References in corpus (5)

• Trapped-ion quantum logic gates based on oscillating magnetic fields
• High-fidelity trapped-ion quantum logic using near-field microwaves
• Ion trap quantum gates with amplitude-modulated laser beams
• Coherent control of trapped ions using off-resonant lasers
• Demonstration of two-atom entanglement with ultrafast optical pulses

Cited by in corpus (5)

• Noisy intermediate-scale quantum computers
• Quantum control methods for robust entanglement of trapped ions
• Robust two-qubit trapped ions gates using spin-dependent squeezing
• Generally noise-resilient quantum gates for trapped-ions
• Robust Oscillator-Mediated Phase Gates Driven by Low-Intensity Pulses