Mini Workshop Hosted By  VTT

Optical Integration of Cryogenic Quantum Technologies

May 21-22, 2025
Helsinki, Finland

Quantum%20Technology

Scope

Scaling up quantum technologies like cryogenic quantum computers has posed a bottleneck: present microwave cabling solutions conduct a significant amount of heat into the cryogenic temperatures. This is a major limitation for the energy efficiency and sustainability of cryogenic technologies, and a challenge for scaling up. In this workshop, we focus on one potential solution: optical signal/data delivery between room temperatures and cryogenics, which may be combined with other techniques. In addition to scalability, optical techniques also enable an increased bandwidth.

We are looking for excellent scientific and technical talks, both from academia and companies on topics such as:

The OpenSuperQPlus project is a part of the European Quantum Technology Flagship, focusing on the development of superconducting quantum computers. The project will have its regular (closed) meeting this time in Espoo, Finland, from May 19 until May 21, hosted by VTT and Aalto University. This meeting will already bring together plenty of European experts working on the optical integration, both from industry and academia.

In this satellite workshop, we warmly welcome participants also outside the OpenSuperQPlus consortium, as our intention is to widen the scope beyond that of OpenSuperQPlus. We are aware of many scattered efforts toward the optical integration of cryogenic quantum technologies, and it is time to bring people together for the first time to a focused open workshop.

Programme (in Finnish summer time UTC+3)

Below is a rough schedule for the workshop. We will update an exact schedule after the abstract submission deadline, when the speakers have been selected.

Wednesday, May 21

Thursday, May 22

Confirmed invited speakers (to be updated)

Mark Bieler
Mark Bieler - Department Quantum Electronics, Physikalisch-Technische Bundesanstalt
Robert Stockill
Robert Stockill - CTO, QphoX
Claudia Hoessbacher
Claudia Hoessbacher - CEO & Co-Founder, Polariton Technologies AG

Claudia, CEO of Polariton Technologies, explored her passion for light during her PhD at ETH Zurich, focusing on integrated photonics and plasmonics. Driven by curiosity and a desire for experimentation, she co-founded Polariton in 2019 to develop the world’s fastest and smallest photonic integrated circuits, transforming data transmission speeds in optical communications.

Stefan Koepfli
Stefan Koepfli - Postdoc, ETH Zurich

Stefan M. Koepfli is a postdoctoral researcher at ETH Zurich in the group of Prof. Leuthold. He leads the Institute of Electromagnetic Field's (IEF) photodetector subgroup, and his work focuses on the development of photodetectors from visible, near-infrared to mid-infrared spectral regimes for various applications ranging from communication to sensing.

Venue

Original Sokos Hotel Presidentti, Eteläinen Rautatiekatu 4, Helsinki

Located in the very centre of Helsinki, 550 m from the Central Railway Station and 250 m from the Kamppi metro station, the workshop provides easy access from the airport or hotels in Helsinki city centre. There is also a direct metro line from VTT / Aalto University.

The meeting venue is a hotel, but there are also plenty of other hotels nearby where to stay.

Registration, presentations & abstract

Deadline for abstracts (<1000 characters) and registration for speakers: February 28

We accept registrations without the chance to give a talk until March 31 unless all seats are filled before then. There are 50 places in total.

Registration & abstract submission:  Workshop: Optical Integration of Cryogenic Quantum Technologies