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Scaling Up the Quantum Chip


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A stylized rendering of the quantum photonic chip and its assembly process.

Massachusetts Institute of Technology researchers have developed a process to manufacture and integrate artificial atoms, created by atomic-scale defects in microscopically thin slices of diamond, with photonic circuitry, producing the largest quantum chip of its type.

Credit: Noel H. Wan

Massachusetts Institute of Technology (MIT) engineers have taken a step toward scalable quantum chip fabrication with a process for manufacturing and integrating artificial atoms, generated by atomic-scale defects in extremely thin slices of diamond, with photonic circuitry.

This hybrid process involves depositing carefully selected "quantum micro chiplets" containing multiple diamond-based quantum bits (qubits) on an aluminum nitride photonic integrated circuit.

The qubits can be prodded with visible light and microwaves to discharge photons conveying quantum information.

The team used this process to build a 128-qubit platform—the largest integrated artificial atom-photonics processor yet.

MIT's Noel H. Wan said, "This is a proof of concept that solid-state qubit emitters are very scalable quantum technologies.”

From MIT News
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Abstracts Copyright © 2020 SmithBucklin, Washington, DC, USA


 

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