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Why future supercomputing requires optics

Could optical technology offer a solution to the heat generation and bandwidth limitations that the computing industry is starting to face? The benefits of energy-efficient passive components, low crosstalk and parallel processing suggest that the answer may be yes.

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Figure 1: The Stanford Vector Matrix Multiplier.
Figure 2: The concept of 'zero-energy' logic gates using optical passive elements.
Figure 3: Architecture for solving Hamiltonian path problem.

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Acknowledgements

We thank William Green, Shaya Fainman, Joseph Rosen, Nati Shaked and Hen Fitoussi for helpful inputs.

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Caulfield, H., Dolev, S. Why future supercomputing requires optics. Nature Photon 4, 261–263 (2010). https://doi.org/10.1038/nphoton.2010.94

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