1. One Trillion True Random Bits Generated with a Field Programmable Gate Array Actuated Magnetic Tunnel Junction
- Author
-
Dubovskiy, Andre, Criss, Troy, Valli, Ahmed Sidi El, Rehm, Laura, Kent, Andrew D., and Haas, Andrew
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics ,Physics - Applied Physics - Abstract
Large quantities of random numbers are crucial in a wide range of applications. We have recently demonstrated that perpendicular nanopillar magnetic tunnel junctions (pMTJs) can produce true random bits when actuated with short pulses. However, our implementation used high-end and expensive electronics, such as a high bandwidth arbitrary waveform generator and analog-to-digital converter, and was limited to relatively low data rates. Here, we significantly increase the speed of true random number generation (TRNG) of our stochastic actuated pMTJs (SMART-pMTJs) using Field Programmable Gate Arrays (FPGAs), demonstrating the generation of over $10^{12}$ bits at rates exceeding 10Mb/s. The resulting bitstreams pass the NIST Statistical Test Suite for randomness with only one XOR operation. In addition to a hundred-fold reduction in the setup cost and a thousand-fold increase in bitrate, the advancement includes simplifying and optimizing random bit generation with a custom-designed analog daughter board to interface an FPGA and SMART-pMTJ. The resulting setup further enables FPGA at-speed processing of MTJ data for stochastic modeling and cryptography., Comment: 4 pages, 5 figures
- Published
- 2024
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