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Optical NP problem solver on laser-written waveguide platform

Optical NP problem solver on laser-written waveguide platform
Optical NP problem solver on laser-written waveguide platform
Cognitive photonic networks are researched to efficiently solve computationally hard problems. Flexible fabrication techniques for the implementation of such networks into compact and scalable chips are desirable for the study of new optical computing schemes and algorithm optimization. Here we demonstrate a femtosecond laser-written optical oracle based on cascaded directional couplers in glass, for the solution of the Hamiltonian path problem. By interrogating the integrated photonic chip with ultrashort laser pulses, we were able to distinguish the different paths traveled by light pulses, and thus infer the existence or the absence of the Hamiltonian path in the network by using an optical correlator. This work proves that graph theory problems may be easily implemented in integrated photonic networks, down scaling the net size and speeding up execution times.
1094-4087
702-710
Ramos Vazquez, Maria
f2b69668-3280-45d6-827f-617992129f46
Bharadwaj, Vibhav
c91f347d-251f-4a02-9c95-4e9bb9740cf7
Sotillo, Belen
e69d8abe-2f01-4321-bc70-c645ac8e2ef9
Lo, Shu-Zee A.
668d207f-5306-44da-bb02-7a0149347aef
Ramponi, Roberta
2651461b-750a-43cc-96df-817f55fe26ad
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Lanzani, Guglielmo
d9ac9791-8dfc-4cda-94f0-62b6fbc62137
Eaton, Shane M.
05065d35-3195-4638-ab84-749a6d4d45f0
Soci, Cesare
cab44ec8-b119-4f74-bf3b-5b110e57cfed
Ramos Vazquez, Maria
f2b69668-3280-45d6-827f-617992129f46
Bharadwaj, Vibhav
c91f347d-251f-4a02-9c95-4e9bb9740cf7
Sotillo, Belen
e69d8abe-2f01-4321-bc70-c645ac8e2ef9
Lo, Shu-Zee A.
668d207f-5306-44da-bb02-7a0149347aef
Ramponi, Roberta
2651461b-750a-43cc-96df-817f55fe26ad
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Lanzani, Guglielmo
d9ac9791-8dfc-4cda-94f0-62b6fbc62137
Eaton, Shane M.
05065d35-3195-4638-ab84-749a6d4d45f0
Soci, Cesare
cab44ec8-b119-4f74-bf3b-5b110e57cfed

Ramos Vazquez, Maria, Bharadwaj, Vibhav, Sotillo, Belen, Lo, Shu-Zee A., Ramponi, Roberta, Zheludev, Nikolay I., Lanzani, Guglielmo, Eaton, Shane M. and Soci, Cesare (2018) Optical NP problem solver on laser-written waveguide platform. Optics Express, 26 (2), 702-710. (doi:10.1364/OE.26.000702).

Record type: Article

Abstract

Cognitive photonic networks are researched to efficiently solve computationally hard problems. Flexible fabrication techniques for the implementation of such networks into compact and scalable chips are desirable for the study of new optical computing schemes and algorithm optimization. Here we demonstrate a femtosecond laser-written optical oracle based on cascaded directional couplers in glass, for the solution of the Hamiltonian path problem. By interrogating the integrated photonic chip with ultrashort laser pulses, we were able to distinguish the different paths traveled by light pulses, and thus infer the existence or the absence of the Hamiltonian path in the network by using an optical correlator. This work proves that graph theory problems may be easily implemented in integrated photonic networks, down scaling the net size and speeding up execution times.

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Optical NP Problem Solver on Laser-Written Waveguide Platform_Soci - Accepted Manuscript
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More information

Accepted/In Press date: 27 November 2017
e-pub ahead of print date: 9 January 2018

Identifiers

Local EPrints ID: 416012
URI: http://eprints.soton.ac.uk/id/eprint/416012
ISSN: 1094-4087
PURE UUID: 18782ae9-d0a3-4a1c-869d-5407053ad853
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 30 Nov 2017 17:30
Last modified: 26 Nov 2021 05:08

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Contributors

Author: Maria Ramos Vazquez
Author: Vibhav Bharadwaj
Author: Belen Sotillo
Author: Shu-Zee A. Lo
Author: Roberta Ramponi
Author: Guglielmo Lanzani
Author: Shane M. Eaton
Author: Cesare Soci

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