Residue number system in a photonic matrix accelerator
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United States of America Patent
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Dec 5, 2023
Grant Date -
Jul 21, 2022
app pub date -
Dec 6, 2021
filing date -
Dec 7, 2020
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Abstract
A photonic processor uses light signals and a residue number system (RNS) to perform calculations. The processor sums two or more values by shifting the phase of a light signal with phase shifters and reading out the summed phase with a coherent detector. Because phase winds back every 2π radians, the photonic processor performs addition modulo 2π. A photonic processor may use the summation of phases to perform dot products and correct erroneous residues. A photonic processor may use the RNS in combination with a positional number system (PNS) to extend the numerical range of the photonic processor, which may be used to accelerate homomorphic encryption (HE)-based deep learning.
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