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Photonics for Quantum (PfQ)

A quantum computer architecture based on silicon donor qubits coupled by photons

Xiruo Yan

Published Aug 27, 2021• 0 citations
Publisher

Abstract

We describe an architecture for fault-tolerant universal quantum computation suited for donor qubits in silicon, coupled by photonic interconnects. The required quantum primitives are local measurements/unitaries, and a non-local Pauli measurement.
DOI
10.1117/12.2611884

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We propose an architecture for quantum computing involving substitutional donors in photonic-crystal silicon cavities and the optical initialization, manipulation, and detection processes already demonstrated in ion traps and other atomic systems. Our scheme leads to easily achievable requirements on the positioning of the donors and considerably simplifies the implementation of the building blocks required for the operation of silicon-based quantum computing devices, including realization of one- and two-qubit gates, initialization, and readout of the qubits. Detailed consideration of the processes involved, using state-of-the-art values for the relevant parameters, indicates that this architecture leads to errors per gate compatible with fault-tolerant quantum computation and should be useful for quantum simulations and quantum optics applications.