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Quantum Random Number Generation Using Nanodiamonds and Nanopillar-Isolated Single NV Centers
Oskars Rudzitis1, Reinis Lazda1, Valts Krumins1
1Laser Centre, University of Latvia, Jelgavas Street 3, LV-1004 Riga, Latvia.
Nanomaterials (Basel, Switzerland)
|April 13, 2026
Summary
We developed two room-temperature quantum random number generators using diamond nitrogen-vacancy centers. These solid-state devices offer a scalable solution for generating secure, unpredictable quantum randomness.
Area of Science:
- Quantum physics
- Materials science
- Information security
Background:
- Quantum random number generation (QRNG) offers inherently unpredictable randomness.
- Nitrogen-vacancy (NV) centers in diamond are promising solid-state qubits for quantum technologies.
Purpose of the Study:
- To demonstrate and compare two solid-state, room-temperature QRNG implementations using NV centers in diamond.
- To assess the scalability of diamond-based QRNG for quantum-secure applications.
Main Methods:
- Utilized ensemble fluorescence from nanodiamonds for one QRNG implementation.
- Employed single-photon emission from single NV centers in diamond nanopillars for a second QRNG.
- Characterized entropy rates, statistical performance, and robustness of both methods.
Main Results:
- Achieved high entropy rates (above 0.98 bits) for both QRNG approaches.
- Demonstrated robust statistical performance and operational stability.
- Fabricated diamond nanopillars enhanced light collection and minimized crosstalk for single NV center QRNG.
Conclusions:
- Diamond-based NV centers provide a viable platform for scalable, room-temperature QRNG.
- Both ensemble and single-NV approaches show potential for quantum-secure randomness generation.
- Further development can establish NV-based QRNG as a practical solution for secure communication.
