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Calculating with light using a chip-scale all-optical abacus.

ABSTRACT: 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.

SUBMITTER: Feldmann J 

PROVIDER: S-EPMC5665880 | biostudies-other | 2017 Nov

REPOSITORIES: biostudies-other

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Calculating with light using a chip-scale all-optical abacus.

Feldmann J J   Stegmaier M M   Gruhler N N   Ríos C C   Bhaskaran H H   Wright C D CD   Pernice W H P WHP  

Nature communications 20171102 1

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, multipl  ...[more]