Generation of random sequences by switching transverse modes in a quantum cascade laser
Dyudelev V. V. 1, Cherotchenko E. D.1, Mikhailov D. A. 1, Chistyakov D. V. 1, Slipchenko S. O. 1, Lutetskiy A. V. 1, Gladyshev A. G. 2, Babichev A. V. 1, Karachinsky L. Ya. 2, Novikov I. I. 2, Pikhtin N. A. 1, Egorov A. Yu. 3, Kondrashov A. V. 4, Semenov A. A. 4, Sokolovskii G. S. 1, Ustinov A. B. 4
1Ioffe Institute, St. Petersburg, Russia
2Connector Optics LLC, St. Petersburg, Russia
3Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
4St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
Email: ustinov-rus@mail.ru

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The generation of random bit sequences by switching transverse modes in a quantum cascade laser (QCL) was studied. To receive the radiation, a quantum cascade detector (QCD) made from a QCL heterostructure was used, which provides the possibility of combining them in a photonic integrated circuit. The study was carried out for a QCL pump pulse duration of 130 ns with a repetition rate of 10-100 kHz. It is shown that electrical pulses with a randomly varying voltage value appear at the output of the QCL-QCD optical coupler. Pulses could be converted into random bit sequences using appropriate comparison. Keywords: Integrated optics, quantum cascade laser, random bit sequences.
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