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Long-term data storage in diamond

Dhomkar, S; Henshaw, J; Jayakumar, H; Meriles, CA; (2016) Long-term data storage in diamond. Science Advances , 2 (10) , Article e1600911. 10.1126/sciadv.1600911. Green open access

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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 multicolor optical microscopy to read, write, and reset arbitrary data sets with two-dimensional (2D) 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. Furthermore, we correlate the center’s charge state and the nuclear spin polarization of the nitrogen host and show that the latter is robust to a cycle of NV− ionization and recharge. In combination with super-resolution microscopy techniques, these observations provide a route toward subdiffraction NV charge control, a regime where the storage capacity could exceed present technologies.

Type: Article
Title: Long-term data storage in diamond
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/sciadv.1600911
Publisher version: http://dx.doi.org/10.1126/sciadv.1600911
Language: English
Additional information: This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
Keywords: Science & Technology, Multidisciplinary Sciences, Science & Technology - Other Topics, Optical Reconstruction Microscopy, Nuclear-Magnetic-Resonance, Nitrogen-Vacancy Center, Ground-State Depletion, Room-Temperature, Coherent Control, Silicon-Carbide, Color-Centers, Single Spins, Nanoscale
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/10054225
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