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Title: Massively parallel ultrafast random bit generation with a chip-scale laser
Authors: Kim, Kyungduk
Bittner, Stefan
Zeng, Yongquan
Guazzotti, Stefano
Hess, Ortwin
Wang, Qi Jie
Cao, Hui
Keywords: Science::Physics::Optics and light
Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2021
Source: Kim, K., Bittner, S., Zeng, Y., Guazzotti, S., Hess, O., Wang, Q. J. & Cao, H. (2021). Massively parallel ultrafast random bit generation with a chip-scale laser. Science, 371(6532), 948-952-952.
Project: NSF grant ECCS-1953959
Office of Naval Research grant N00014-21-1-2026
National Research Foundation Competitive Research Program grants NRF-CRP-18- 2017-02
A*Star AME programmatic grant A18A7b0058
Science Foundation Ireland grant 18/RP/6236
Journal: Science
Abstract: Random numbers are widely used for information security, cryptography, stochastic modeling, and quantum simulations. Key technical challenges for physical random number generation are speed and scalability. We demonstrate a method for ultrafast generation of hundreds of random bit streams in parallel with a single laser diode. Spatiotemporal interference of many lasing modes in a specially designed cavity is introduced as a scheme for greatly accelerated random bit generation. Spontaneous emission, caused by quantum fluctuations, produces stochastic noise that makes the bit streams unpredictable. We achieve a total bit rate of 250 terabits per second with off-line postprocessing, which is more than two orders of magnitude higher than the current postprocessing record. Our approach is robust, compact, and energy-efficient, with potential applications in secure communication and high-performance computation.
ISSN: 0036-8075
DOI: 10.1126/science.abc2666
Rights: © 2021 The Author(s). Published by American Association for the Advancement of Science (AAAS). All rights reserved. This paper was published in Science and is made available with permission of The Author(s). Published by American Association for the Advancement of Science (AAAS).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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