FLUXONICS

FLUXONICS is a european framework dedicated to furthering research into superconducting electronics and digital circuits. Within this framework is the S-Pulse project, which I am currently involved in. As part of this project, I recently visited the FLUXONICS foundry for superconducting electronics at IPHT, Jena for a Technology training workshop.

There are several institutions involved in the project, and it was interesting to meet people from all over Europe who share a similar interest in this technology:

University of Twente (The Netherlands)
PTB (Germany)
Chalmers Univ. of Technology (Sweden)
University of Savoie (France)
University of Cambridge (UK)
University of Birmingham (UK)
CNR-Istituto di Cibernetica (Italy)
University of Technology Ilmenau (Germany)
IPHT (Germany)
University of Karlsruhe (Germany)
CEA-Grenoble (France)

It was a good workshop, with a thorough introduction to RSFQ and the state of superconducting electronics in Europe. The foundry has a stable 1 kA/cm2 Nb/Al-AlOx/Nb process certified with ISO-9001 standard. It is nice to see this activity in Europe, given that the other two major superconducting electronics foundries are based in America (HYPRES) and Japan (ISTEC). It will be interesting to see how the European RSFQ / Josephson technology improves over the next couple of years, and to keep track of the research performed with chips fabricated using the IPHT Niobium process.

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5 thoughts on “FLUXONICS

  1. cohærence * says:

    – Was there any mention of the HTMT project?

  2. physicsandcake says:

    No, although the workshop was really to promote the foundry facility to the European research community, so there weren’t very many applications described or proposed (that was left as an exercise for the attendees). The S-Pulse project is scheduled to continue for a couple of years though, so there may be further workshops and meetings to discuss the applications side of things. In fact there’s a conference at the end of this month – EUROFLUX that I’m planning to attend, so I’ll keep an eye open for any interesting posters etc.

  3. supradeepnarayana says:

    What kind of RSFQ research do you perform? Could you be more specific. I work with prof Vasili Semenov at Stony Brook .

  4. physicsandcake says:

    Hi supradeepnarayana,

    I don’t do work on RSFQ per se, I look at the physical properties of single Josephson Junctions. There’s some info on my Research Page although it’s a bit out of date (must get around to updating that). I do fundamental studies on Josephson junctions for qubit and device applications. I got involved in the RSFQ stuff because I believe it’s important to check the properties of the individual junctions, especially when a new foundry process is developed (say for example a sub-micron process). In return, RSFQ junctions are a good testbed as they are pretty near ideal in some cases, and provide a good comparison to our more novel structures (e.g. High Tc junctions). Hope that is helpful!

  5. supradeepnarayana says:

    I see, you are more towards HTc and qubit stuff. I deal with only Low JJ for RSFQ circuits. Though over group we are also doing some work on reversible computing using JJ circuits ( its my coworkers main project).
    I am more directly involved in designing of digital and analog circuits, flux trapping measurements and studying the effects of magnetic field sfq circuits. we have designed a few SQIFs too.

    Nice blog you have here.

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