Universal Gate Operations on Nuclear Spin Qubits in an Optical Tweezer Array of Yb 171 Atoms

Shuo Ma, Alex P. Burgers, Genyue Liu, Jack Wilson, Bichen Zhang, Jeff D. Thompson

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Neutral atom arrays are a rapidly developing platform for quantum science. Recently, alkaline earth atoms (AEAs) have attracted interest because their unique level structure provides several opportunities for improved performance. In this work, we present the first demonstration of a universal set of quantum gate operations on a nuclear spin qubit in an AEA, using Yb171. We implement narrow-line cooling and imaging using a newly discovered magic trapping wavelength at λ=486.78 nm. We also demonstrate nuclear spin initialization, readout, and single-qubit gates and observe long coherence times [T1≈20 s and T2∗=1.24(5) s] and a single-qubit operation fidelity F1Q=0.99959(6). We also demonstrate two-qubit entangling gates using the Rydberg blockade, as well as coherent control of these gate operations using light shifts on the Yb+ ion core transition at 369 nm. These results are a significant step toward highly coherent quantum gates in AEA tweezer arrays.

Original languageEnglish (US)
Article number021028
JournalPhysical Review X
Issue number2
StatePublished - Jun 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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