Terabit-scale high-fidelity diamond data storage
nature.com
nature.com
"Record-breaking diamond storage can save data for millions of years" (2024) https://www.newscientist.com/article/2457948-record-breaking... :
> Previous techniques have also used laser pulses to encode data into diamonds, but the higher storage density afforded by the new method means a diamond optical disc with the same volume as a standard Blu-ray could store approximately 100 terabytes of data – the equivalent of about 2000 Blu-rays – while lasting far longer than a typical Blu-ray’s lifetime of just a few decades.
> [...] This is possible by multiplexing the storage in the spectral domain.
> "It means that we can store many different images at the same place in the diamond by using a laser of a slightly different color to store different information into different atoms in the same microscopic spots," said Delord, a postdoctoral research associate at CCNY. "If this method can be applied to other materials or at room temperature, it could find its way to computing applications requiring high-capacity storage." [...]
> "What we did was control the electrical charge of these color centers very precisely using a narrow-band laser and cryogenic conditions," explained Delord. "This new approach allowed us to essentially write and read tiny bits of data at a much finer level than previously possible, down to a single atom."
"Reversible optical data storage below the diffraction limit" (2023) https://www.nature.com/articles/s41565-023-01542-9
"Ask HN: Can qubits be written to crystals as diffraction patterns?" (2023) https://news.ycombinator.com/item?id=38501668 :
> Aren't diffraction patterns due to lattice irregularities effective wave functions?
> Presumably holography would have already solved for quantum data storage if diffraction is a sufficient analog [of] a wave function?
"All-optical complex field imaging using diffractive processors" (2024) https://news.ycombinator.com/item?id=40541785 ; How to capture phase and intensity with a camera, Huygens-Steiner