Integrated photonics for quantum technologies

Date:
January 7, 2022
Source:
Universita"t Paderborn
Summary:
An international team of leading scientists has compiled a
comprehensive overview of the potential, global outlook, background
and frontiers of integrated photonics. The paper is a roadmap for
integrated photonic circuits for quantum technologies. The review
outlines underlying technologies, presents the current state of
play of research and describes possible future applications.



FULL STORY ==========================================================================
An international team of leading scientists, headed up by Paderborn
physicist Professor Klaus Jo"ns, has compiled a comprehensive overview
of the potential, global outlook, background and frontiers of integrated photonics. The paper - - a roadmap for integrated photonic circuits for
quantum technologies -- has now been published by journal Nature Reviews Physics. The review outlines underlying technologies, presents the current state of play of research and describes possible future applications.


========================================================================== "Photonic quantum technologies have reached a number of important
milestones over the last 20 years. However, scalability remains a major challenge when it comes to translating results from the lab to everyday applications.

Applications often require more than 1,000 optical components, all of
which have to be individually optimised. Photonic quantum technologies
can, though, benefit from the parallel developments in classical photonic integration," explains Jo"ns. According to the scientists, more research
is required. "The integrated photonic platforms, which require a variety
of multiple materials, component designs and integration strategies,
bring multiple challenges, in particular signal losses, which are not
easily compensated for in the quantum world," continues Jo"ns. In their
paper, the authors state that the complex innovation cycle for integrated photonic quantum technologies (IPQT) requires investments, the resolution
of specific technological challenges, the development of the necessary infrastructure and further structuring towards a mature ecosystem. They conclude that there is an increasing demand for scientists and engineers
with substantial knowledge of quantum mechanics and its technological applications.

Integrated quantum photonics uses classical integrated photonic
technologies and devices for quantum applications, whereby chip-level integration is critical for scaling up and translating laboratory
demonstrators to real-life technologies. Jo"ns explains: "Efforts in the
field of integrated quantum photonics are broad-ranging and include the development of quantum photonic circuits, which can be monolithically,
hybrid or heterogeneously integrated. In our paper, we discuss what applications may become possible in the future by overcoming the current roadblocks." The scientists also provide an overview of the research
landscape and discuss the innovation and market potential. The aim is to stimulate further research and research funding by outlining not only the scientific issues, but also the challenges related to the development
of the necessary manufacturing infrastructure and supply chains for
bringing the technologies to market.

According to the scientists, there is an urgent need to invest
heavily in education in order to train the next generation of IPQT
engineers. Jo"ns says: "Regardless of the type of technology that will be
used in commercial quantum devices, the underlying principles of quantum mechanics are the same. We predict an increasing demand for scientists
and engineers with substantial knowledge of both quantum mechanics and
its technological applications.

Investing in educating the next generation will contribute
to pushing the scientific and technological frontiers." ========================================================================== Story Source: Materials provided by Universita"t_Paderborn. Note:
Content may be edited for style and length.


========================================================================== Journal Reference:
1. Emanuele Pelucchi, Giorgos Fagas, Igor Aharonovich, Dirk Englund,
Eden
Figueroa, Qihuang Gong, Hu"bel Hannes, Jin Liu, Chao-Yang Lu,
Nobuyuki Matsuda, Jian-Wei Pan, Florian Schreck, Fabio Sciarrino,
Christine Silberhorn, Jianwei Wang, Klaus D. Jo"ns. The
potential and global outlook of integrated photonics for
quantum technologies. Nature Reviews Physics, 2021; DOI:
10.1038/s42254-021-00398-z ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2022/01/220107101003.htm
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