Invited talk on aCryComm in IQT The Hague conference

aCryComm coordinator Antti Kemppinen gave an invited talk on the project for a wide audience consisting of people from academics, RTOs, and startups. During the conference, he also visited project partner Single Quantum, which has premises in the neighbouring city of Delft (from left: Federica Facchin and Mario Castaneda from Single Quantum, Antti Kemppinen from VTT, and Marco Caputo from Single Quantum).


World’s fastest photodetector – aCryComm paper published in Science

Scientists at ETH have developed the world’s fastest photodetector within the framework of aCryComm, breaking the record with a bandwidth of >500 GHz. Combining graphene, the two-dimensional carbon material, with metamaterials the researchers overcame graphene’s typically low absorption. This breakthrough could lead to the next generation of high-speed infrared photodetectors, crucial for applications like internet distribution through optical fibers. While graphene offers advantages such as low cost and compatibility with current fabrication technologies, the sensitivity of the device still needs improvement. The goal is to demonstrate a densely integrated array with enhanced performance characteristics in the future.

Further reading

Original paper in Science

ETH Zürich press release

Popular article in Optics & Photonics news

Popular Article in Graphene News and Updates

Three talks at ECOC

Last September we had a chance to present some of the latest results of our project aCryComm.

  • Monday 19th we presented our vision towards optical communication links for cryogenic applications (paper Mo4G.3, presented by Matteo Cherchi)
  • Tuesday 20th the first testing of fast and efficient plasmonic modulators by Polariton Technologies at cryogenic temperatures (paper Tu1G.1, presented by Patrick Habegger)
  • Thursday 22nd it was the turn of the record high speed photodetector demonstrated by ETH (post deadline paper Th3B.5, presented by Stefan Köpfli)

With these results we are one step closer to enable an energy efficient, high-speed cryogenic data bus.


Seminar about aCryComm

26 March 2021: Seminar “attojoule cryogenic communication” as part of Quantum Science & Technology seminar series organized by Quantum Technology Finland. Slides available at this link, video recording available at this link.

aCryComm invited talk at Photonics West 2021

6-11 March 2021: the invited paper “aCryComm: attojoule cryogenic communication” (Paper 11692-28) will be available on demand at the virtual Photonics West Conference and Exhibition

aCryComm press release

We have published a Press Release about the project (a version in Finnish is also available). A PDF version can be also found under Downloads > Dissemination materials, where you can find also a document with a slightly more detailed description of the project.

aCryComm kick-off

We have kicked-off our new FET-Open project aCryComm (attojoule Cryogenic Communication). We decided to split the online meeting in two days, to ensure a more relaxed experience for everyone. We got to know each other and started discussing the exciting technical challenges that we are going to tackle in the next three years. We will  develop the building blocks for future cryogenic optoelectronic interfaces, with the long term goal of scaling up cryogenic quantum computers as well as of introducing fast and energy efficient classical cryogenic logic in supercomputers.