# Hybrid diamond chip enables single-shot readout of quantum spins

_Published Sunday, October 18, 2026 at 10:06 AM EDT · Science · Latest · Tier 2 — Notable_

![Hybrid diamond chip enables single-shot readout of quantum spins — Primary](https://scx2.b-cdn.net/gfx/news/hires/2026/illustration-showing-g.jpg)

Researchers demonstrated a gallium-phosphide-on-diamond chip that couples light strongly enough to a diamond quantum bit to read its electron spin in a single measurement. The work, published in Optica Quantum, addresses a component needed to transfer quantum information into optical networks.

The team fabricated more than 600 light-trapping cavities on diamond with a 99.5% yield. Devices produced distinct optical signatures for different spin states and had spin-relaxation times exceeding 0.4 milliseconds. Connecting and entangling multiple devices on the same chip remains a next step.

## Sources

- [Phys.org](https://phys.org/news/2026-10-hybrid-diamond-chip-interactions-quantum.html)

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Canonical: https://techandbusiness.org/newswire/S-KLhY7XNL8j26k29yditr
Published: 2026-10-18T14:06:27.188Z
Story chronology: 2026-10-18T13:00:05.000Z
Retrieved: 2026-10-18T17:12:47.590Z
Publisher: Tech & Business (techandbusiness.org)