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- Kunihito Hirano, Taiki Yamazaki, +7 authors Peter Spencer Davis
- Optics express
- 2010

We experimentally demonstrate random bit generation using multi-bit samples of bandwidth-enhanced chaos in semiconductor lasers. Chaotic fluctuation of laser output is generated in a semiconductorâ€¦ (More)

- Yasuhiro Akizawa, Takanori Yamazaki, +5 authors Peter Davis
- IEEE Photonics Technology Letters
- 2012

We propose a scheme for fast random number generation with bandwidth-enhanced chaotic semiconductor lasers. Chaotic laser intensity output and its time-delayed signal are sampled at 50 GigaSample perâ€¦ (More)

- K. Yoshimura, Jun Muramatsu, +5 authors Atsushi Uchida
- Physical review letters
- 2012

We propose a secure key distribution scheme based on correlated physical randomness in remote optical scramblers driven by common random light. The security of the scheme depends on the practicalâ€¦ (More)

- Takuya Mikami, Kazutaka Kanno, +7 authors Peter Spencer Davis
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2012

We analyze the time for growth of bit entropy when generating nondeterministic bits using a chaotic semiconductor laser model. The mechanism for generating nondeterministic bits is modeled as a 1-bitâ€¦ (More)

The Sagnac effect is the phase difference between two counter-propagating laser beams in the same ring resonator due to rotation, originally introduced by Sagnac in 1913[1]. It has become the basisâ€¦ (More)

- Kazusa Ugajin, Yuta Terashima, +4 authors Masanobu Inubushi
- Optics express
- 2017

Random number generators are essential for applications in information security and numerical simulations. Most optical-chaos-based random number generators produce random bit sequences by offlineâ€¦ (More)

- Hideo Makino, Takahisa Harayama, Yoji Aizawa
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2001

The quantum level statistics affected by bifurcations in classical dynamics is studied by using a one-parameter family of lemon billiard systems. The classical phase space of our system consists ofâ€¦ (More)

- Satoshi Sunada, Takahisa Harayama, +4 authors Atsushi Uchida
- Optics express
- 2011

We report a novel chaos semiconductor laser chip in which a distributed feedback (DFB) laser, two semiconductor optical amplifiers (SOAs) and a photodiode (PD) are monolithically integrated with aâ€¦ (More)

- Takahisa Harayama, Satoshi Sunada, +4 authors Peter Spencer Davis
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2012

We theoretically show that completely stochastic fast physical random bit generation at a rate of more than one gigabit per second can be realized by using lasers with optical delayed feedback whichâ€¦ (More)

- Satoshi Sunada, Takahisa Harayama, +4 authors Peter Spencer Davis
- Optics express
- 2011

We experimentally show that a random optical pulse train can be generated by modulating a bistable semiconductor ring laser. When the ring laser is switched from the monostable to the bistableâ€¦ (More)