Quantum computation with doped silicon cavities

TL;DR

This paper proposes a silicon-based quantum computer architecture utilizing doped silicon cavities and optical processes, aiming to simplify implementation and achieve error rates suitable for scalable quantum computing.

Contribution

It introduces a novel architecture combining doped silicon cavities with optical control, streamlining key quantum computing operations in a solid-state platform.

Findings

Potential for low error rates compatible with scalability

Utilizes existing optical initialization and readout techniques

Simplifies donor positioning and gate implementation

Abstract

We propose a quantum computer architecture 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 considerably simplifies the implementation of the building blocks for the successful operation of silicon-based solid-state quantum computers, including positioning of the donors, 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 might lead to errors per gate compatible with scalable quantum computation.