Long-term data storage in diamond
Siddharth Dhomkar, Jacob Henshaw, Harishankar Jayakumar, Carlos A., Meriles

TL;DR
This paper demonstrates a method for long-term data storage in diamond using NV centers, achieving high-density, multi-dimensional storage with potential for super-resolution control surpassing current technologies.
Contribution
It introduces a novel approach to data storage in diamond via NV center charge states, enabling multi-layer and high-density storage with robust charge and spin properties.
Findings
Achieved 2D binary data storage comparable to DVDs.
Extended storage capacity to three dimensions without cross talk.
Demonstrated robustness of nuclear spin polarization during charge cycling.
Abstract
The negatively-charged nitrogen-vacancy (NV-) center in diamond is the focus of widespread attention for applications ranging from quantum information processing to nanoscale metrology. Although most work so far has focused on the NV- optical and spin properties, control of the charge state promises complementary opportunities. One intriguing possibility is the long-term storage of information, a notion we hereby introduce using NV rich, type-1b diamond. As a proof of principle, we use multi-color optical microscopy to read, write, and reset arbitrary data sets with 2-D binary bit density comparable to present digital-video-disk (DVD) technology. Leveraging on the singular dynamics of NV- ionization, we encode information on different planes of the diamond crystal with no cross talk, hence extending the storage capacity to three dimensions. Further, we correlate the center's charge…
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