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Nanoscale Waveguide Beam Splitter in Quantum Technologies
Dmitry Makarov1, Ksenia Makarova1, Yuliana Tsykareva1
1Department of Fundamental and Applied Physics, Northern (Arctic) Federal University, nab. Severnoi Dviny 17, 163002 Arkhangelsk, Russia.
Nanomaterials (Basel, Switzerland)
|November 26, 2022
Summary
The theory for nanoscale waveguide beam splitters differs significantly from larger devices. This research presents a new theory crucial for advancing quantum technologies that utilize these tiny optical components.
Area of Science:
- Quantum Optics
- Nanophotonics
Background:
- Waveguide beam splitters are key components in quantum optics.
- Existing theories typically assume scale-invariance for these devices.
Purpose of the Study:
- To investigate the distinct theoretical behavior of nanoscale waveguide beam splitters.
- To present a generalized theory applicable to devices of varying scales.
Main Methods:
- Analysis of the wave function at the output ports of nanoscale beam splitters.
- Theoretical modeling considering device size, waveguide coupling, and photon nonmonochromaticity.
Main Results:
- Demonstrated a significant theoretical divergence for nanoscale beam splitters compared to larger counterparts.
- Showcased that prior theories represent a specific instance of the new, generalized framework.
- Identified key parameters influencing output wave functions: beam splitter size, coupling, and photon spectral properties.
Conclusions:
- The theory of nanoscale waveguide beam splitters is not universally equivalent to macroscopic devices.
- The developed theory provides a more accurate description for quantum technologies relying on miniaturized beam splitters.
- Results highlight the importance of scale and nonmonochromaticity in nanoscale quantum optical devices.
