Abstract
Reliable information transmission between spatially separated nodes is fundamental to a network architecture for scalable quantum technology. Spin qubit in semiconductor quantum dots is a promising candidate for quantum information processing. However, there remains a challenge to design a practical path from the existing experiments to scalable quantum processor. Here we propose a module consisting of spin singlet-triplet qubits and single microwave photons. We show a high degree of control over interactions between the spin qubit and the quantum light field can be achieved. Furthermore, we propose preparation of a shaped single photons with an efficiency of 98%, and deterministic quantum state transfer and entanglement generation between remote nodes with a high fidelity of 90%. This spin-photon module has met the threshold of particular designed error-correction protocols, thus provides a feasible approach towards scalable quantum network architecture.
Highlights
Reliable information transmission between spatially separated nodes is fundamental to a network architecture for scalable quantum technology
The design of architecture is to find a realistic path from the feasible state-of-art technology to scalable quantum information processing
Deterministic and efficient quantum state transfer between spatially separated qubits is an essential part of large-scale network architecture[7,8]
Summary
Reliable information transmission between spatially separated nodes is fundamental to a network architecture for scalable quantum technology. We propose preparation of a shaped single photons with an efficiency of 98%, and deterministic quantum state transfer and entanglement generation between remote nodes with a high fidelity of 90%. This spin-photon module has met the threshold of particular designed error-correction protocols, provides a feasible approach towards scalable quantum network architecture. Deterministic and efficient quantum state transfer between spatially separated qubits is an essential part of large-scale network architecture[7,8] This scheme requires a universal module that is capable of sending, receiving, storing and processing quantum information encoded in temporal shaped single photons. We develop a systematic framework for tackling the crucial challenges individually while constructing a cohesive design toward the spin-photon network architecture
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