24 October 2016 Generation of physical random numbers by using homodyne detection
Author Affiliations +
Physical random numbers generated by quantum measurements are, in principle, impossible to predict. We have demonstrated the generation of physical random numbers by using a high-speed balanced photodetector to measure the quadrature amplitudes of vacuum states. Using this method, random numbers were generated at 500 Mbps, which is more than one order of magnitude faster than previously [Gabriel et al:, Nature Photonics 4, 711-715 (2010)]. The Crush test battery of the TestU01 suite consists of 31 tests in 144 variations, and we used them to statistically analyze these numbers. The generated random numbers passed 14 of the 31 tests. To improve the randomness, we performed a hash operation, in which each random number was multiplied by a random Toeplitz matrix; the resulting numbers passed all of the tests in the TestU01 Crush battery.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kodai Hirakawa, Kodai Hirakawa, Shota Oya, Shota Oya, Yusuke Oguri, Yusuke Oguri, Tsubasa Ichikawa, Tsubasa Ichikawa, Yujiro Eto, Yujiro Eto, Takuya Hirano, Takuya Hirano, Toyohiro Tsurumaru, Toyohiro Tsurumaru, "Generation of physical random numbers by using homodyne detection", Proc. SPIE 9996, Quantum Information Science and Technology II, 99960Q (24 October 2016); doi: 10.1117/12.2241362; https://doi.org/10.1117/12.2241362


Design considerations for quantum radar implementation
Proceedings of SPIE (May 28 2014)
Overmoded Fibre For Multiport Coherent Detection
Proceedings of SPIE (September 16 1987)
Squeezed light and entangled images from four wave mixing in...
Proceedings of SPIE (September 04 2008)
Squeezed States
Proceedings of SPIE (December 31 1986)

Back to Top