We introduce an optical tweezer platform for assembling and individually manipulating a two-dimensional register of nuclear spin qubits. Each nuclear spin qubit is encoded in the ground 1S0 manifold of 87Sr and is individually manipulated by site-selective addressing beams. We observe that spin relaxation is negligible after 5 seconds, indicating that T1≫5 s. Furthermore, utilizing simultaneous manipulation of subsets of qubits, we demonstrate significant phase coherence over the entire register, estimating T2⋆=(21±7) s and measuring T2echo=(42±6) s.
@article{arxiv.2108.04790,
title = {Assembly and coherent control of a register of nuclear spin qubits},
author = {Katrina Barnes and Peter Battaglino and Benjamin J. Bloom and Kayleigh Cassella and Robin Coxe and Nicole Crisosto and Jonathan P. King and Stanimir S. Kondov and Krish Kotru and Stuart C. Larsen and Joseph Lauigan and Brian J. Lester and Mickey McDonald and Eli Megidish and Sandeep Narayanaswami and Ciro Nishiguchi and Remy Notermans and Lucas S. Peng and Albert Ryou and Tsung-Yao Wu and Michael Yarwood},
journal= {arXiv preprint arXiv:2108.04790},
year = {2022}
}