Quantum Computation in a Hybrid Array of Molecules and Rydberg Atoms

We show that an array of polar molecules interacting with Rydberg atoms is a promising hybrid system for scalable quantum computation. Quantum information stored in long-lived hyperfine or rotational states molecules, which interact indirectly through resonant dipole-dipole interactions atoms. A two-qubit gate based on this interaction has duration 1μs and achievable fidelity 99.9%. The little sensitivity to the motional particles—the can be thermal states, do not need trapped during excitation, does heat heating negligible effect. Within large, static array, applied arbitrary pairs separated by tens micrometres, making scheme highly scalable. molecule-atom also used rapid qubit initialization efficient, nondestructive readout, without driving any molecular transitions. Single-qubit gates are driven using microwave pulses alone, exploiting strong electric dipole transitions between states. Thus, all operations required large-scale computation done moving exciting them out their ground electronic states.Received 6 April 2022Accepted 12 August 2022DOI:https://doi.org/10.1103/PRXQuantum.3.030340Published American Physical Society under terms Creative Commons Attribution 4.0 International license. Further distribution work must maintain attribution author(s) published article's title, journal citation, DOI.Published SocietyPhysics Subject Headings (PhySH)Research AreasCold ultracold moleculesQuantum gatesQuantum architectures & platformsPhysical SystemsRydberg InformationAtomic, Molecular Optical