In this interview, Johannes Piotrowski, a researcher at Humboldt University of Berlin, shares his journey into quantum physics and his current work on Collective Effects in Cascaded Quantum Systems. He reflects on the value of Berlin’s scientific ecosystem, the importance of curiosity in research, and how BERLIN QUANTUM provides the foundation for long-term, impactful projects.
What inspired you to pursue a career in quantum physics?
Learning about physics meant to me understanding how the world works. Studying quantum physics gave me an even deeper glimpse of our fundamental understanding of reality.
Why did you choose to conduct your research in Berlin?
I love the city and environment of Berlin. When I heard of the BQ initiative and even found a suitable project among the ones offered—one that I can apply PhD experience to and still learn about a completely new field—I had to take the chance to apply.
What advantages does Berlin offer for quantum physics research compared to other cities or countries?
A large, international city like Berlin offers a huge collection of potential synergies. Between three universities and plenty of research institutes and companies, all with their own global network, a vibrant field like quantum physics is bound to thrive.
Can you tell us about a current project or experiment you are working on?
Following my path of understanding the fundamentals, we are investigating the way in which many atoms collectively behave very differently from single ones. In particular, we build a chain of levitated atoms that are coupled together and measure their collective emission of light.
How does BERLIN QUANTUM and the Berlin research landscape support your work, and which resources are particularly helpful?
Funding for a three-year project gives me the stability to plan and conduct research with a significant outlook.
How does living in Berlin influence your personal and professional development?
The presence of so many scientific and science-adjacent institutions in Berlin—including research, teaching, outreach, and policy—gives me plentiful options to choose the right path to combine my skills and interests.
In your opinion, what are the most exciting developments or trends in quantum physics that we can expect in the coming years?
I welcome the trend of de-mystifying quantum physics. Quantum computing, metrology, and technology are amazing, but need to be seen for their actual strengths instead of vague promises to be taken seriously.
What advice would you give to young scientists who aspire to a career in quantum physics and might consider coming to Berlin?
If a Nobel Prize winner visiting my lab can still be genuinely curious instead of condescending, so should you. Never be the smartest in the room, so you can always learn more.
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