https://www.cas.cn/cm/202412/t20241204_5041177.shtml
https://www.nature.com/articles/s41566-024-01573-1
Academician Du Jiangfeng, Professor Wang Ya, Professor Xia Kangwei and others from the University of Science and Technology of China have proposed and developed a four-dimensional information storage technology based on diamond luminescent point defects, which has the key characteristics of high density, ultra-long maintenance-free life, fast reading and writing required for practical applications, and is expected to provide solutions for the new generation of green high-capacity information storage urgently needed in the “data explosion” information age.
The diamond storage medium exploits fluorescent vacancy centres as robust storage units and provides a high storage density of 14.8 Tbit 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.