Coherent Control of a Nuclear Spin via Interactions with a Rare-Earth Ion in the Solid State

Coherent Control of a Nuclear Spin via Interactions with a Rare-Earth Ion in the Solid State

Uysal, Mehmet T. (Princeton University)
Raha, Mouktik (Princeton University)
Chen, Songtao (Princeton University)
Phenicie, Christopher M. (Princeton University)
Ourari, Salim (Princeton University)
Wang, Mengen (University of California)
Van De Walle, Chris G. (University of California)
Dobrovitski, V.V. (TU Delft QID/Dobrovitski Group; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft)
Thompson, Jeff D. (Princeton University)

2023

Individually addressed Er3+ ions in solid-state hosts are promising resources for quantum repeaters, because of their direct emission in the telecom band and their compatibility with silicon photonic devices. While the Er3+ electron spin provides a spin-photon interface, ancilla nuclear spins could enable multiqubit registers with longer storage times. In this work, we demonstrate coherent coupling between the electron spin of a single Er3+ ion and a single I=1/2 nuclear spin in the solid-state host crystal, which is a fortuitously located proton (1H). We control the nuclear spin using dynamical-decoupling sequences applied to the electron spin, implementing one- and two-qubit gate operations. Crucially, the nuclear spin coherence time exceeds the electron coherence time by several orders of magnitude, because of its smaller magnetic moment. These results provide a path toward combining long-lived nuclear spin quantum registers with telecom-wavelength emitters for long-distance quantum repeaters.

http://resolver.tudelft.nl/uuid:72a43dd5-0181-49d3-86e1-bb1af7d4f865

https://doi.org/10.1103/PRXQuantum.4.010323

PRX Quantum, 4 (1)

Institutional Repository

journal article

© 2023 Mehmet T. Uysal, Mouktik Raha, Songtao Chen, Christopher M. Phenicie, Salim Ourari, Mengen Wang, Chris G. Van De Walle, V.V. Dobrovitski, Jeff D. Thompson