English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Ion trap is one of the most promising candidates for quantum computing.Current schemes mainly focus on a linear chain of up to about one hundred ionsin a Paul trap. To further scale up the qubit number, one possible direction isto use 2D or 3D ion crystals (Wigner crystals). In these systems, ions aregenerally subjected to large micromotion due to the strong fast-oscillatingelectric field, which can significantly influence the performance of entanglinggates. In this work, we develop an efficient numerical method to designhigh-fidelity entangling gates in a general 3D ion crystal. We presentnumerical algorithms to solve the equilibrium configuration of the ions andtheir collective normal modes. We then give a mathematical description of themicromotion and use it to generalize the gate scheme for linear ion chains intoa general 3D crystal. The involved time integral of highly oscillatoryfunctions is expanded into a fast-converging series for accurate and efficientevaluation and optimization. As a numerical example, we show a high-fidelityentangling gate design between two ions in a 100-ion crystal, with atheoretical fidelity of 99.9\%.

High Fidelity Entangling Gates in a 3D Ion Crystal under Micromotion