Abstract: | |
We introduce a scheme that combines phonon-mediated quantum logic gates in trapped ions with the benefits of continuous dynamical decoupling. We demonstrate theoretically that a strong driving of the qubit decouples it from external magnetic-field noise, enhancing the fidelity of two-qubit quantum gates. Moreover, the scheme does not require ground-state cooling, and is inherently robust to undesired ac Stark shifts. The underlying mechanism can be extended to a variety of other systems where a strong driving protects the quantum coherence of the qubits without compromising the two-qubit couplings. © 2012 American Physical Society.
|
|
License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Publication type: | Article |
Publishing status: | publishedVersion |
Publication date: | 2012 |
Keywords english: | AC Stark shift, Dynamical decoupling, Quantum coherence, Quantum gates, Quantum logic gate, Trapped ion, Two-qubit, Underlying mechanism, Automata theory, Logic gates, Quantum electronics, Quantum computers |
DDC: | 530 | Physik |
Showing items related by title, author, creator and subject.