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

We demonstrate key multi-qubit quantum logic primitives in a dual-speciestrapped-ion system based on $^{40}$Ca+ and $^{88}$Sr+ ions, using two opticalqubits with quantum-logic-control frequencies in the red to near-infraredrange. With all ionization, cooling, and control wavelengths in a wavelengthband similar for the two species and centered in the visible, and with afavorable mass ratio for sympathetic cooling, this pair is a promisingcandidate for scalable quantum information processing. Same-species anddual-species two-qubit gates, based on the Moelmer-Soerensen interaction andperformed in a cryogenic surface-electrode trap, are characterized via thefidelity of generated entangled states; we achieve fidelities of 98.8(2)% and97.5(2)% in Ca+ - Ca+ and Sr+ - Sr+ gates, respectively. For a similar Ca+ -Sr+ gate, we achieve a fidelity of 94.3(3)%, and carrying out a Sr+ - Sr+ gateperformed with a Ca+ sympathetic cooling ion in a Sr+ - Ca+ - Sr+ crystalconfiguration, we achieve a fidelity of 95.7(3)%. These primitives form a setof trapped-ion capabilities for logic with sympathetic cooling and ancillareadout or state transfer for general quantum computing and communicationapplications.

Dual-Species, Multi-Qubit Logic Primitives for Ca+/Sr+ Trapped-Ion Crystals