Silicon nitride Mach-Zehnder interferometer for on-chip quantum random number generation

A. Prokhodtsov, V. Kovalyuk, P. An, A. Golikov, R. Shakhovoy, V. Sharoglazova, A. Udaltsov, Y. Kurochkin, G. Goltsman

Research output: Contribution to journalConference articleAcademicpeer-review


In this work, we experimentally studied silicon nitride Mach-Zehnder interferometer (MZI) with two directional couplers and 400 ps optical delay line for telecom wavelength 1550 nm. We achieved the extinction ratio in a range of 0.76-13.86 dB and system coupling losses of 28-44 dB, depending on the parameters of directional couplers. The developed interferometer is promising for the use in a compact random number generator for the needs of a fully integrated quantum cryptography system, where compact design, as well as high generation speed, are needed.

Original languageEnglish
Article number012118
JournalJournal of physics: Conference series
Issue number1
Publication statusPublished - 28 Dec 2020
Externally publishedYes
Event7th International School and Conference "SaintPetersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and Nanostructures - Saint Petersburg, Russian Federation
Duration: 27 Apr 202030 Apr 2020


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