Roadmap on all-optical processing
Journal article, 2019

The ability to process optical signals without passing into the electrical domain has always attracted the attention of the research community. Processing photons by photons unfolds new scenarios, in principle allowing for unseen signal processing and computing capabilities. Optical computation can be seen as a large scientific field in which researchers operate, trying to find solutions to their specific needs by different approaches; although the challenges can be substantially different, they are typically addressed using knowledge and technological platforms that are shared across the whole field. This significant know-how can also benefit other scientific communities, providing lateral solutions to their problems, as well as leading to novel applications. The aim of this Roadmap is to provide a broad view of the state-of-the-art in this lively scientific research field and to discuss the advances required to tackle emerging challenges, thanks to contributions authored by experts affiliated to both academic institutions and high-tech industries. The Roadmap is organized so as to put side by side contributions on different aspects of optical processing, aiming to enhance the cross-contamination of ideas between scientists working in three different fields of photonics: optical gates and logical units, high bit-rate signal processing and optical quantum computing. The ultimate intent of this paper is to provide guidance for young scientists as well as providing research-funding institutions and stake holders with a comprehensive overview of perspectives and opportunities offered by this research field.

optical gates

quantum computing

all-optical processing

optical signal processing

optical computing


Paolo Minzioni

Universita degli studi di Pavia

Cosimo Lacava

University of Southampton

Takasumi Tanabe

Keio University

Jianji Dong

Huazhong University of Science and Technology

Xiaoyong Hu

Beijing University of Technology

Gyorgy Csaba

Pázmány Péter Catholic University

Wolfgang Porod

University of Notre Dame

Ghanshyam Singh

Malaviya National Institute of Technology Jaipur

Alan E. Willner

University of Southern California

Ahmed Almaiman

King Saud University

University of Southern California

Jochen Schröder

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Victor Torres Company

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Anna C. Peacock

University of Southampton

Michael J. Strain

University of Strathclyde

Francesca Parmigiani

University of Southampton

Giampiero Contestabile

Sant'Anna School of Advanced Studies (SSSUP)

David Marpaung

University of Twente

Zhixin Liu

University College London (UCL)

John E. Bowers

University of California at Santa Barbara

Lin Chang

University of California at Santa Barbara

Simon Fabbri

Swiss Federal Institute of Technology in Lausanne (EPFL)

Maria Ramos Vazquez

Nanyang Technological University

Vibhav Bharadwaj

National Research Council of Italy (CNR)

Shane M. Eaton

National Research Council of Italy (CNR)

Peter Lodahl

University of Copenhagen

Xiang Zhang

The University of Sydney

Benjamin J. Eggleton

The University of Sydney

William John Munro

Nippon Telegraph and Telephone Corporation

Kae Nemoto

National Institute of Informatics Japan

Olivier Morin

Max Planck Society

Julien Laurat

Sorbonne University

Joshua Nunn

University of Bath

Journal of Optics

2040-8978 (ISSN) 2040-8986 (eISSN)

Vol. 21 6 063001

Dark-Soliton Engineering in Microresonator Frequency Combs (DarkComb)

European Commission (EC) (EC/H2020/771410), 2018-05-01 -- 2023-04-30.

Subject Categories

Atom and Molecular Physics and Optics

Communication Studies

Information Systemes, Social aspects



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