A method of quantum communication using sideband-modulated infrared emission

Andrii Аleksieiev; Mikhailo Prokofiev; Petro Shpatar

doi:10.1117/12.3010050

5 January 2024 A method of quantum communication using sideband-modulated infrared emission

Andrii Аleksieiev, Mikhailo Prokofiev, Petro Shpatar

Proceedings Volume 12938, Sixteenth International Conference on Correlation Optics; 129380T (2024) https://doi.org/10.1117/12.3010050
Event: International Conference Correlation Optics (COR 2023), 2023, Chernivtsi, Ukraine

Abstract

The method of quantum communication using sideband-modulated emission allows for efficient integration of devices constructed on this principle into optical fiber communication lines due to a number of advantages, including the absence of complex distributed interference schemes, simplification of the phase alignment task of the transmitter and receiver modules, and a significant increase in spectral efficiency of the use of the optical fiber communication line [1, 2]. The development of low-loss quantum communication methods using sideband frequencies, the efficiency of which does not depend on uncontrolled polarization change in the communication channel, and the development of methods for high-speed generation of quantum states are important theoretical and practical tasks. A semiconductor frequency-tunable laser with a central wavelength of 1550 nm, a bandwidth of 1.5 MHz, and a tuning step of 0.005 nm was used as the radiation source. The signal attenuation in the filter band is 43 dB, which allows to apply a modulation index of 0.05 with a contribution of the central wavelength to the quantum bit error rate of not more than 0.1%. The error rate when using the compensation scheme does not exceed 0.5%. The losses in the receiving module are 6.4 dB, which consist of losses of each modulator, on the polarization beam splitter, mixer, filter, and optical connectors.

Citation Download Citation

Andrii Аleksieiev, Mikhailo Prokofiev, and Petro Shpatar "A method of quantum communication using sideband-modulated infrared emission", Proc. SPIE 12938, Sixteenth International Conference on Correlation Optics, 129380T (5 January 2024); https://doi.org/10.1117/12.3010050

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