Related papers: Universal gate operations on nuclear spin qubits in an optical tweezer array of $^{171}$Yb atoms

Universal gate operations on nuclear spin qubits in an optical tweezer array of $^{171}$Yb atoms

URL: http://arxiv.org/abs/2112.06799v1
Date: Mon, 13 Dec 2021 16:58:51 GMT
Title: Universal gate operations on nuclear spin qubits in an optical tweezer array of $^{171}$Yb atoms
Authors: Shuo Ma, Alex P Burgers, Genyue Liu, Jack Wilson, Bichen Zhang, Jeff D Thompson
Abstract summary: We demonstrate a universal set of quantum gate operations on a new type of neutral atom qubit. We present techniques for cooling, trapping and imaging using a newly discovered magic trapping wavelength. Results are a significant step towards highly coherent quantum gates in AEA tweezer arrays.
Score: 0.7307395485114934
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Neutral atom arrays are a rapidly developing platform for quantum science. In this work, we demonstrate a universal set of quantum gate operations on a new type of neutral atom qubit: a nuclear spin in an alkaline earth-like atom (AEA), $^{171}$Yb. We present techniques for cooling, trapping and imaging using a newly discovered magic trapping wavelength at $\lambda = 486.78$ nm. We implement qubit initialization, readout, and single-qubit gates, and observe long qubit lifetimes, $T_1 \approx 20$ s and $T^*_2 = 1.24(5)$ s, and a single-qubit operation fidelity $\mathcal{F}_{1Q} = 0.99959(6)$. 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 towards highly coherent quantum gates in AEA tweezer arrays.

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