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Abstract

The disclosure describes aspects of using multiple species in trapped-ion nodes for quantum networking. In an aspect, a quantum networking node is described that includes multiple memory qubits, each memory qubit being based on a ¹⁷¹Yb⁺ atomic ion, and one or more communication qubits, each communication qubit being based on a ¹³⁸Ba⁺ atomic ion. The memory and communication qubits are part of a lattice in an atomic ion trap. In another aspect, a quantum computing system having a modular optical architecture is described that includes multiple quantum networking nodes, each quantum networking node including multiple memory qubits (e.g., based on a ¹⁷¹Yb⁺ atomic ion) and one or more communication qubits (e.g., based on a ¹³⁸Ba⁺ atomic ion). The memory and communication qubits are part of a lattice in an atomic ion trap. The system further includes a photonic entangler coupled to each of the multiple quantum networking nodes.

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First Claim