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Efficient Ground-State Cooling of Large Trapped-Ion Chains with an Electromagnetically-Induced-Transparency Tripod Scheme

TitleEfficient Ground-State Cooling of Large Trapped-Ion Chains with an Electromagnetically-Induced-Transparency Tripod Scheme
Publication TypeJournal Article
Year of Publication2020
AuthorsL.. Feng, W.. L. Tan, A.. De, A.. Menon, A.. Chu, G.. Pagano, and C.. Monroe
JournalPhys. Rev. Lett.
Volume125
Pagination053001
Date PublishedJUL 29
Type of ArticleArticle
ISSN0031-9007
Abstract

We report the electromagnetically-induced-transparency (EIT) cooling of a large trapped Yb-171(+) ion chain to the quantum ground state. Unlike conventional EIT cooling, we engage a four-level tripod structure and achieve fast sub-Doppler cooling over all motional modes. We observe simultaneous groundstate cooling across the complete transverse mode spectrum of up to 40 ions, occupying a bandwidth of over 3 MHz. The cooling time is observed to be less than 300 mu s, independent of the number of ions. Such efficient cooling across the entire spectrum is essential for high-fidelity quantum operations using trapped ion crystals for quantum simulators or quantum computers.

DOI10.1103/PhysRevLett.125.053001