Terabit-scale high-fidelity diamond data storage

            Terabit-scale high-fidelity diamond data storage
           https://www.nature.com/articles/s41566-024-01573-1

   Jingyang Zhou, Jia Su, Junyu Guan, Yichen Yang, Wentao Ji, Mengqi
         Wang, Fazhan Shi, Kangwei Xia, Ya Wang & Jiangfeng Du
           Nature Photonics volume 18, pages 1327–1334 (2024)

(*) Abstract

In the era of digital information, realizing efficient and durable data
storage solutions is paramount. Innovations in storage capacity, data
throughput, device lifespan and energy consumption are pressing
necessities for the continuous progression of practical digital data
storage technologies. Here we present a diamond storage medium that
exploits fluorescent vacancy centres as robust storage units and
provides a high storage density of 14.8 Tbit oer cm^-3, a short write
time of 200 fs and an estimated ultralong maintenance-free lifespan on
the scale of millions of years. High-speed readout through plane and
volume imaging is demonstrated with a high fidelity exceeding 99%,
showing that the approach addresses the practical demands of digital
data storage and provides a promising solution for future storage
requirements.

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Unfortunately can't get a copy of the full paper.  It's amusing to think
that we could end up using diamonds to store information.  It would be
the most expensive storage ever.