Affiliation: NTT Communication Science Laboratories
- Chaos laser chips with delayed optical feedback using a passive ring waveguideSatoshi Sunada
NTT Communication Science Laboratories, NTT Corporation, Soraku gun, Kyoto, Japan
Opt Express 19:5713-24. 2011..5 dB up to 10 GHz. The stability and quality of the chaotic mode is demonstrated using strict statistical tests of randomness applied to long binary sequences extracted by sampling the optical intensity signal...
- Theory of fast nondeterministic physical random-bit generation with chaotic lasersTakahisa Harayama
NTT Communication Laboratories, NTT Corporation, Soraku gun, Kyoto, Japan
Phys Rev E Stat Nonlin Soft Matter Phys 85:046215. 2012..The theory is based on the mixing property of chaos, which transduces microscopic quantum noise of spontaneous emission in lasers into random transitions between discrete macroscopic states...
- Random optical pulse generation with bistable semiconductor ring lasersSatoshi Sunada
NTT Communication Science Laboratories, NTT Corporation, 2 4 Hikaridai, Soraku gun, Kyoto 619 0237, Japan
Opt Express 19:7439-50. 2011..It is also shown that it is possible to generate optical pulse sequences which pass a standard suite of statistical randomness tests...
- Noise amplification by chaotic dynamics in a delayed feedback laser system and its application to nondeterministic random bit generationSatoshi Sunada
NTT Communication Science Laboratories, NTT Corporation, 2 4 Hikaridai Seika cho, Soraku gun, Kyoto 619 0237, Japan
Chaos 22:047513. 2012..It is experimentally shown that the convergence to the invariant density plays an important role in nondeterministic random bit generation, which could be desirable for future ultimate secure communication systems...
- Randomness in a Galton board from the viewpoint of predictability: sensitivity and statistical bias of output statesKenichi Arai
NTT Communication Science Laboratories, NTT Corporation, 2 4 Hikaridai, Seika cho, Soraku gun, Kyoto 619 0237, Japan
Phys Rev E Stat Nonlin Soft Matter Phys 86:056216. 2012..We show that it is possible to determine the radii of scatterers corresponding to a given predictability criterion, specified as a statistical bias, and a given uncertainty of initial conditions...