String of data comparison through Laguerre-Gaussian modes

Mateusz Szatkowski; Julian Koechlin; Dorilian Lopez-Mago

doi:10.1117/12.2568486

20 August 2020 String of data comparison through Laguerre-Gaussian modes

Mateusz Szatkowski, Julian Koechlin, Dorilian Lopez-Mago

Proceedings Volume 11486, Laser Beam Shaping XX; 114860A (2020) https://doi.org/10.1117/12.2568486
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

This work, based on classical light, was in uenced by quantum applications, where comparison of quantum states is an important issue. Laguerre-Gaussian modes were used to encode and compare two independent signals. Polarization controlled SWAP gate exchanges information between two strings of data, therefore preventing them from the leakage. Comparison is done with kHz frequency, achieved by the Digital Micromirror Device. Detected power, being a single value, represents an overlap of both signals. Presented system is capable to perform direct error analysis together with a normalization procedure, which overcomes the necessity of data post-processing and largely reduces time required for such comparison. We present a calibration procedure, which uses the glass sample to determine the performance of the experimental setup.

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Citation Download Citation

Mateusz Szatkowski, Julian Koechlin, and Dorilian Lopez-Mago "String of data comparison through Laguerre-Gaussian modes", Proc. SPIE 11486, Laser Beam Shaping XX, 114860A (20 August 2020); https://doi.org/10.1117/12.2568486

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