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arXiv · 2204.05293

Enriching the quantum toolbox of ultracold molecules with Rydberg atoms

Kenneth Wang·Conner P. Williams·Lewis R. B. Picard·Norman Y. Yao·Kang-Kuen Ni
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Abstract

We describe a quantum information architecture consisting of a hybrid array of optically-trapped molecules and atoms. This design leverages the large transition dipole moments of Rydberg atoms to mediate fast, high-fidelity gates between qubits encoded in coherent molecular degrees of freedom. Error channels of detuning, decay, pulse area noise, and leakage to other molecular states are discussed. The molecule-Rydberg interaction can also be used to enable nondestructive molecule detection and rotational state readout. We consider a specific near-term implementation of this scheme using NaCs molecules and Cs Rydberg atoms, showing that it is possible to implement 300~ns gates with a potential fidelity of $> 99.9\%$.

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Kenneth Wang, Conner P. Williams, Lewis R. B. Picard, Norman Y. Yao, Kang-Kuen Ni. 2022-04-11. Enriching the quantum toolbox of ultracold molecules with Rydberg atoms. https://doi.org/10.1103/prxquantum.3.030339

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