Open AccessOptimal fiber optic scheme for sub-SQL quantum receiver realization
Author(s) -
M. Shcherbatenko,
M. S. Elezov,
Denis Sych,
Gregory Goltsman
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1695/1/012140
Subject(s) - interferometry , computer science , scheme (mathematics) , optical fiber , michelson interferometer , interference (communication) , astronomical interferometer , realization (probability) , mach–zehnder interferometer , optics , electronic engineering , physics , telecommunications , engineering , mathematics , channel (broadcasting) , mathematical analysis , statistics
Practical implementation of high-precision quantum measurements is an important problem in modern science. One of the main parts of the quantum receiver is the optical scheme. We developed and tested several optical circuits based on different types of interferometers, namely Sagnac-based scheme, Mach-Zehnder-based scheme, and Michelson-based scheme. All these schemes are assembled with optical fibers and fiber-optic components, since the fiber-optic implementation is closest to application in practical devices. Schemes were evaluated according to two main criteria: extinction and interference stability. On the basis of the obtained data, it can be concluded that the most suitable is the scheme based on the Mach-Zehnder interferometer. In continuous mode, we were able to obtain an interference extinction about 30 dB with acceptable temporal stability.