2nd Zurich Instruments Quantum User meeting London

The 2nd Quantum Technology User Meeting is behind us and we are full of impressions and thankful to all the participants, especially our host Mark Buitelaar! The goal of the meeting was to foster networking among ZI Users & ZI friends and create a scientifically centered community powered by our products. At the same time, it is the ideal place to help you become a super-user and to feel more comfortable with any measurement challenge.

The User Meeting in London did just that, with special focus on quantum computing and quantum sensing. This event addressed mostly the European community but with new offices in Boston and Shanghai, the aim is to have such event globally with a local mindset. UK is one of the leading countries in the field of Quantum Technologies with unique national focus that mobilizes the whole society in search for the quantum future. It is a great honor to be able to help build it with you.

There was something for everyone. The programme was filled with high-level scientific talks, practical tutorials, lab tours followed by a poster session and a social event on the first day. Bruno showed the latest from ZI: a quantum computing control system designed for systems of up to 100 qubits consisting of three dedicated products, the PQSC, the HDAWG, and the UHFQA.

Our users are the best ambassadors of the work being done in their labs using Zurich Instruments AWGs for qubit control and UHFLI for fast readout.

Mark Buitelaar, Alessandro Crippa, Jonne Koski and Josip Kukucka all use UHFLI for fast readout on quantum dot systems. Combined with the UHF-AWG Arbitrary Waveform Generator. As Mark showed us the UHFLI can be used to measure the stability diagram of a carbon nanotube (CNT) double quantum dot system in less than a second and Alessandro showed Si-MOSFET qubits with a single operation point.  Jonne opened Friday session explaining how GaAs-based qubits can be tuned from charge to spin state, and Josip introduced holes in Ge qubits as another promising system with long coherence time.

Johannes Heinsoo presented his new results on rapid parallel readout of 5 superconducting qubits using the UHFQA. This is a great example of how collaboration of top research labs and ZI can drive the development of the field.

A new cylindrical design for superconducting qubits and specially designed electronics shown by Peter Leek are the kind of innovations that enable the next steps in scaling up quantum computers.

No matter what qubit system you use, tuning up and addressing the complexity is a challenging task. Natalia Ares introduced a machine learning approach to qubit characterization and tune up that will inevitably be utilized in the future. I am sure all of us will think of our favorite qubit state before we choose our next Netflix movie.

Takis Kontos showed promising results on CNT qubits with 2us coherence times and spin-orbit engineered systems suitable for studying Majorana qubits. When using CNTs for sensing Adrian Bachtold demonstrated a stunning mass sensitivity in Yotta gramm range from suspended CNTs that on top exhibits polaron physics. Having UHFLI with wide BW and fast PLL loop certainly helped Edward Lairds stabilizing the CNT nanomechanical resonator which are promising maser-like systems. And Peter Barker gave us an insight into the parametric feedback cooling of nanoparticles which turns them into powerful sensors with the potential to answer such challenging questions as the quantum nature of gravity.

Junior researchers Anna Pearson, Teresa Hoenigl-Decrinis and Matthieu Desjardins had the opportunity to present their work through talks which will hopefully continue in the future as they are the ones doing the work in laboratories.

After the lab visits at UCL we moved to posters session and dinner at the Lady Ottoline pub. Marjorie’s great dedication to prepare a smooth schedule throughout the day paid off as everyone was in good spirits and had lively discussions.

 

Tutorials were held on three topics focused on the HDAWG signal generation, lock-in and UHFQA detection, API programming with Python for data recording and measurement automation. Tutorials are meant to cover the basics but also give inspiration with more advanced examples of instrument usage that you might not have discovered before. We went over technical details and answer the questions ranging from basic to those covering more complex issues. Bruno, Romain and Jelena tried their best to make it memorable and practical. Let us know what you thought, where you stumble the most, and what you’d like to see next time.

 

 

Finally, we wouldn’t be able to have such a great event without everyone being involved and participating in lively discussions. Hope you continue the engagement on the high level – you don’t need to wait till the next event!

We are grateful to Beat, Sarah, Eva, Molina and Jan for all the help and support in preparing this event.