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arXiv · 2206.14082

Strong coupling between a photon and a hole spin in silicon

Cécile X. Yu·Simon Zihlmann·José C. Abadillo-Uriel·Vincent P. Michal·Nils Rambal·Heimanu Niebojewski·Thomas Bedecarrats·Maud Vinet·Etienne Dumur·Michele Filippone·Benoit Bertrand·Silvano De Franceschi·Yann-Michel Niquet·Romain Maurand
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Abstract

Spins in semiconductor quantum dots constitute a promising platform for scalable quantum information processing. Coupling them strongly to the photonic modes of superconducting microwave resonators would enable fast non-demolition readout and long-range, on-chip connectivity, well beyond nearest-neighbor quantum interactions. Here we demonstrate strong coupling between a microwave photon in a superconducting resonator and a hole spin in a silicon-based double quantum dot issued from a foundry-compatible MOS fabrication process. By leveraging the strong spin-orbit interaction intrinsically present in the valence band of silicon, we achieve a spin-photon coupling rate as high as 330~MHz largely exceeding the combined spin-photon decoherence rate. This result, together with the recently demonstrated long coherence of hole spins in silicon, opens a new realistic pathway to the development of circuit quantum electrodynamics with spins in semiconductor quantum dots.

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Cécile X. Yu, Simon Zihlmann, José C. Abadillo-Uriel, Vincent P. Michal, Nils Rambal, Heimanu Niebojewski, Thomas Bedecarrats, Maud Vinet, Etienne Dumur, Michele Filippone, Benoit Bertrand, Silvano De Franceschi, Yann-Michel Niquet, Romain Maurand. 2022-06-28. Strong coupling between a photon and a hole spin in silicon. https://doi.org/10.1038/s41565-023-01332-3

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