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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Feldmann J,Stegmaier M,Gruhler N,Ríos C,Bhaskaran H,Wright CD,Pernice WHPdoi
10.1038/s41467-017-01506-3subject
Has Abstractpub_date
2017-11-02 00:00:00pages
1256issue
1issn
2041-1723pii
10.1038/s41467-017-01506-3journal_volume
8pub_type
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