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 ground-state 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 μs, 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.
| Original language | English (US) |
|---|---|
| Article number | 053001 |
| Journal | Physical review letters |
| Volume | 125 |
| Issue number | 5 |
| DOIs | |
| State | Published - Jul 31 2020 |
Funding
We acknowledge early discussions with Kristi Beck, Michael Foss-Feig, and Tobias Grass. This work is supported by the Multidisciplinary University Research Initiative from Army Research Office on Modular Quantum Systems, the DARPA DRINQS program, the DOE BES Award No. de-sc0019449, the DOE HEP Award No. de-sc0019380, and the Seed-Funding Program of the NSF Physics Frontier Center at Joint Quantum Institute.
ASJC Scopus subject areas
- General Physics and Astronomy
