Enriching the quantum toolbox of ultracold molecules with Rydberg atoms

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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Cited by in corpus (18)

• Rydberg superatoms: An artificial quantum system for quantum information processing and quantum optics
• Long-lived entanglement of molecules in magic-wavelength optical tweezers
• Sub-millisecond Entanglement and iSWAP Gate between Molecular Qubits
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level
• Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule
• Quantum-Enhanced Metrology for Molecular Symmetry Violation using Decoherence-Free Subspaces
• Quantum simulation of the central spin model with a Rydberg atom and polar molecules in optical tweezers
• Interspecies Förster resonances of Rb-Cs Rydberg $d$-states for enhanced multi-qubit gate fidelities
• Sympathetic cooling and slowing of molecules with Rydberg atoms
• Long-lived multilevel coherences and spin-1 dynamics encoded in the rotational states of ultracold molecules
• Bounds on detection of Bell correlations with entangled ultra-cold atoms in optical lattices under occupation defects
• Ion-mediated interaction and controlled phase gate operation between two atomic qubits
• Ultracold Interactions between Ions and Polar Molecules
• Exact Entanglement Dynamics of Two Spins in Finite Baths
• First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
• Ion-atom two-qubit quantum gate based on phonon blockade
• Non-destructive optical read-out and manipulation of circular Rydberg atoms