An architecture for quantum networking of neutral atom processors

Development of a network for remote entanglement of quantum processors is an outstanding challenge in quantum information science. We propose and analyze a two-species architecture for remote entanglement of neutral atom quantum computers based on integration of optically trapped atomic qubit arrays with fast optics for photon collection. One of the atomic species is used for atom-photon entanglement, and the other species provides local processing. We compare the achievable rates of remote entanglement generation for two optical approaches: free space photon collection with a lens and a near-concentric, long working distance resonant cavity. Laser cooling and trapping within the cavity remove the need for mechanical transport of atoms from a source region, which allows for a fast repetition rate. Using optimized values of the cavity finesse, remote entanglement generation rates > 10(3) s(-1) are predicted for experimentally feasible parameters.

Automated summary

The paper proposes a two-species architecture for remote entanglement of neutral atom quantum computers, one of which is used for atom-photon entanglement while the other provides local processing. By comparing two optical approaches, the predicted rates of remote entanglement generation under experimentally feasible parameters are discussed.