Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array

TL;DR

This paper demonstrates plane-specific initialization and manipulation of nuclear spin qubits in a 3D optical tweezer array of ytterbium atoms, advancing scalable quantum computing architectures.

Contribution

It introduces a novel plane-selective excitation method enabling coherent control of qubits in a 3D array, essential for scalable quantum processors.

Findings

Successful plane-by-plane initialization of nuclear spin qubits.

Plane-dependent coherent temporal evolution of qubits.

Effective plane-selective qubit manipulation using excitation techniques.

Abstract

One of the central challenges for a practical fault-tolerant quantum computer is scalability. A three-dimensional structure of optical tweezer arrays offers the potential for scaling up neutral atom processors. However, coherent local operations, essential for quantum error correction, have yet to be explored for this platform. Here, we demonstrate plane-by-plane initialization of nuclear spin qubits of ${}^{171}\mathrm{Yb}$ atoms in a three-dimensional atom array and plane-dependent coherent temporal evolution of qubits, as well as plane-selective qubit manipulation by exploiting the plane-selective excitation of the atoms from the ${}^1S_0$ to the ${}^3P_2$ state. This plane-selective manipulation technique paves the way for quantum computing and quantum simulation in three-dimensional multilayer architectures.