Entanglement of neutral-atom chains by spin-exchange Rydberg interaction

Abstract

Conditions to achieve an unusually strong Rydberg spin-exchange interaction are investigated and proposed as a means to generate pairwise entanglement and realize a SWAP-like quantum gate for neutral atoms. Ground-state entanglement is created by mapping entangled Rydberg states to ground states using optical techniques. A protocol involving SWAP gate and pairwise entanglement operations is predicted to create global entanglement of a chain of $N$ atoms in a time that is independent of $N$.

14 pages, 8 figures

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Cited by in corpus (9)

• High-fidelity parallel entangling gates on a neutral atom quantum computer
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Effective Rabi dynamics of Rydberg atoms and robust high-fidelity quantum gates with a resonant amplitude-modulation field
• Ultra-precision quantum sensing and measurement based on nonlinear hybrid optomechanical systems containing ultracold atoms or atomic Bose-Einstein condensate
• Unselective ground-state blockade of Rydberg atoms for implementing quantum gates
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Hyperentanglement of divalent neutral atoms by Rydberg blockade
• Quantum gates with weak van der Waals interactions of neutral Rydberg atoms
• Coherence enhancement of Rydberg polaritons