Magnetic tunnel junction as a real-time entropy source: Field-Programmable Gate Array based random bit generation without post-processing
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912816553787392 |
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| author | Criss, Troy Valli, Ahmed Sidi El Li, Naomi Haas, Andrew Kent, Andrew D. |
| author_facet | Criss, Troy Valli, Ahmed Sidi El Li, Naomi Haas, Andrew Kent, Andrew D. |
| contents | We demonstrate a method to generate application-ready truly random bits from a magnetic tunnel junction driven by a Field-Programmable Gate Array (FPGA). We implement a real-time feedback loop that stabilizes the switching probability near 50\% and apply an XOR operation, both on the FPGA, to suppress short-term correlations, together mitigating long-term drift and bias in the bitstream. This combined approach enables NIST-compliant random bit generation at 5~Mb/s without post-processing, providing a practical hardware solution for fast and reliable true random number generation. Beyond cryptographic applications, these capabilities open opportunities for stochastic hardware accelerators, probabilistic computing, and large-scale modeling where real-time access to unbiased randomness is essential. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20735 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetic tunnel junction as a real-time entropy source: Field-Programmable Gate Array based random bit generation without post-processing Criss, Troy Valli, Ahmed Sidi El Li, Naomi Haas, Andrew Kent, Andrew D. Applied Physics Mesoscale and Nanoscale Physics We demonstrate a method to generate application-ready truly random bits from a magnetic tunnel junction driven by a Field-Programmable Gate Array (FPGA). We implement a real-time feedback loop that stabilizes the switching probability near 50\% and apply an XOR operation, both on the FPGA, to suppress short-term correlations, together mitigating long-term drift and bias in the bitstream. This combined approach enables NIST-compliant random bit generation at 5~Mb/s without post-processing, providing a practical hardware solution for fast and reliable true random number generation. Beyond cryptographic applications, these capabilities open opportunities for stochastic hardware accelerators, probabilistic computing, and large-scale modeling where real-time access to unbiased randomness is essential. |
| title | Magnetic tunnel junction as a real-time entropy source: Field-Programmable Gate Array based random bit generation without post-processing |
| topic | Applied Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2510.20735 |