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 171Yb 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 1S0 to the 3P2 state. This plane-selective manipulation technique paves the way for quantum computing and quantum simulation in three-dimensional multilayer architectures.
@article{arxiv.2501.05935,
title = {Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array},
author = {Toshi Kusano and Yuma Nakamura and Rei Yokoyama and Naoya Ozawa and Kosuke Shibata and Tetsushi Takano and Yosuke Takasu and Yoshiro Takahashi},
journal= {arXiv preprint arXiv:2501.05935},
year = {2025}
}