Search Results - "Abebe, Nathnael"
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Experimentally realized in situ backpropagation for deep learning in photonic neural networks
Published in Science (American Association for the Advancement of Science) (28-04-2023)“…Integrated photonic neural networks provide a promising platform for energy-efficient, high-throughput machine learning with extensive scientific and…”
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Journal Article -
2
Using Geometry To Sense Current
Published in Nano letters (14-12-2016)“…We describe a superconducting three-terminal device that uses a simple geometric effect known as current crowding to sense the flow of current and actuate a…”
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Journal Article -
3
Coupled Mode Design of Low-Loss Electromechanical Phase Shifters
Published in Micro (01-06-2024)“…Micro-electromechanical systems (MEMS) have the potential to provide low-power phase shifting in silicon photonics, but techniques for designing low-loss…”
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4
Experimental evaluation of digitally verifiable photonic computing for blockchain and cryptocurrency
Published in Optica (20-05-2023)“…As blockchain technology and cryptocurrency become increasingly mainstream, photonic computing has emerged as an efficient hardware platform that reduces…”
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Journal Article -
5
Tunable Directional Couplers for High Contrast Optical Meshes
Published in 2024 International Conference on Optical MEMS and Nanophotonics (OMN) (28-07-2024)“…We describe the operation, design, and fabrication of MEMS-tunable silicon-photonics directional couplers, with potential for smaller footprint, less…”
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Conference Proceeding -
6
Silicon Nitride Process for Mode-Orthogonal MEMS-Tunable Photonic Devices
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…We report a silicon-photonics process for MEMS-tunable phase shifters that leverages orthogonal optical modes. A phase shifter with -0.63dB insertion loss and…”
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Conference Proceeding -
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Experimental evaluation of digitally-verifiable photonic computing for blockchain and cryptocurrency
Published 17-05-2022“…As blockchain technology and cryptocurrency become increasingly mainstream, ever-increasing energy costs required to maintain the computational power running…”
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Journal Article -
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LightHash: Experimental Evaluation of a Photonic Cryptocurrency
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…We propose LightHash, the first feasible photonic cryptographic hash function for blockchain technology using programmable photonic networks. We experimentally…”
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Conference Proceeding -
9
MEMS Photonic Networks For Parallelized Matrix Multiplication Using Wavelength-Division Multiplexing
Published in 2021 Conference on Lasers and Electro-Optics (CLEO) (01-05-2021)“…We study dispersion models and design variations for programmable MEMS photonic networks to analyze scalability of parallel matrix-vector multiplication, which…”
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Conference Proceeding -
10
Experimentally realized in situ backpropagation for deep learning in nanophotonic neural networks
Published 17-05-2022“…Neural networks are widely deployed models across many scientific disciplines and commercial endeavors ranging from edge computing and sensing to large-scale…”
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Journal Article -
11
Inference and Gradient Measurement for Backpropagation in Photonic Neural Networks
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…We experimentally demonstrate in situ backpropagation in a programmable nanophotonic interferometer network, achieving inference accuracies matching digital…”
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Conference Proceeding -
12
Wavelength-Division Multiplexed Optical Cryptocurrency
Published in 2021 Conference on Lasers and Electro-Optics (CLEO) (01-05-2021)“…We propose an optical proof-of-work scheme that feeds data encoded into wavelength-division multiplexed modes through a programmable photonic network. We…”
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Conference Proceeding -
13
Sensing supercurrents using geometric effects
Published 04-06-2016“…We describe a superconducting three-terminal device that uses a simple geometric effect known as current crowding to sense the flow of current and actuate a…”
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Journal Article