Calculating with light using a chip-scale all-optical abacus.
Calculating with light using a chip-scale all-optical abacus.
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DOI:
10.1038/s41467-017-01506-3
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发表时间:
2017-11-02
影响因子:
16.6
通讯作者:
Pernice WHP
中科院分区:
文献类型:
--
作者:
Feldmann J;Stegmaier M;Gruhler N;Ríos C;Bhaskaran H;Wright CD;Pernice WHP
Machines that simultaneously process and store multistate data at one and the same location can provide a new class of fast, powerful and efficient general-purpose computers. We demonstrate the central element of an all-optical calculator, a photonic abacus, which provides multistate compute-and-store operation by integrating functional phase-change materials with nanophotonic chips. With picosecond optical pulses we perform the fundamental arithmetic operations of addition, subtraction, multiplication, and division, including a carryover into multiple cells. This basic processing unit is embedded into a scalable phase-change photonic network and addressed optically through a two-pulse random access scheme. Our framework provides first steps towards light-based non-von Neumann arithmetic. Computing approaches in the optical domain would allow for ultra-fast signaling and ultra-high bandwidth capabilities. Here, Feldmann et al. demonstrate a photonic abacus, which provides multistate compute-and store operation by integrating phase-change materials with nanophotonic chips.
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