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.

journal_name

Nat Commun

journal_title

Nature communications

authors

Feldmann J,Stegmaier M,Gruhler N,Ríos C,Bhaskaran H,Wright CD,Pernice WHP

doi

10.1038/s41467-017-01506-3

subject

Has Abstract

pub_date

2017-11-02 00:00:00

pages

1256

issue

1

issn

2041-1723

pii

10.1038/s41467-017-01506-3

journal_volume

8

pub_type

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