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Tytuł:
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Massively parallel ultrafast random bit generation with a chip-scale laser.
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Autorzy:
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Kim K; Department of Applied Physics, Yale University, New Haven, CT 06520, USA.
Bittner S; Department of Applied Physics, Yale University, New Haven, CT 06520, USA.; Chair in Photonics, LMOPS EA-4423 Laboratory, CentraleSupélec and Université de Lorraine, Metz 57070, France.
Zeng Y; Center for OptoElectronics and Biophotonics, School of Electrical and Electronic Engineering, School of Physical and Mathematical Science, and Photonics Institute, Nanyang Technological University, 639798 Singapore.
Guazzotti S; Blackett Laboratory, Imperial College London, London SW7 2AZ, UK.; School of Physics and CRANN Institute, Trinity College Dublin, Dublin 2, Ireland.
Hess O; Blackett Laboratory, Imperial College London, London SW7 2AZ, UK.; School of Physics and CRANN Institute, Trinity College Dublin, Dublin 2, Ireland.
Wang QJ; Center for OptoElectronics and Biophotonics, School of Electrical and Electronic Engineering, School of Physical and Mathematical Science, and Photonics Institute, Nanyang Technological University, 639798 Singapore.
Cao H; Department of Applied Physics, Yale University, New Haven, CT 06520, USA. .
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Źródło:
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Science (New York, N.Y.) [Science] 2021 Feb 26; Vol. 371 (6532), pp. 948-952.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Publication: : Washington, DC : American Association for the Advancement of Science
Original Publication: New York, N.Y. : [s.n.] 1880-
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Entry Date(s):
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Date Created: 20210226 Date Completed: 20210302 Latest Revision: 20210521
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Update Code:
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20240105
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DOI:
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10.1126/science.abc2666
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PMID:
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33632847
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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.
(Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.)
Comment in: Science. 2021 Feb 26;371(6532):889-890. (PMID: 33632835)
