astronomy

Per Delsing

Per Delsing is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Per Delsing rather than just read about it. In short: Per Delsing (born 1959) is a Swedish physicist and professor in experimental physics at Chalmers University of Technology. Career Per Delsing studied engineering physics at Lund University, where he graduated with a master of science in engineering (Swedish: civilingenjörsexam) in 1984.

Key takeaways

Per Delsing belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Per Delsing to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Per Delsing from memory before moving on to harder problems.

Reference excerpt

Per Delsing (born 1959) is a Swedish physicist and professor in experimental physics at Chalmers University of Technology.

Career Per Delsing studied engineering physics at Lund University, where he graduated with a master of science in engineering (Swedish: civilingenjörsexam) in 1984. He then did his PhD at Chalmers University of Technology, where he defended in 1990 his thesis "Single electron tunneling in ultrasmall tunnel junctions". In 1991, he was appointed assistant professor at the University of Gothenburg, where he became associate professor in 1994. Since 1997, he has been a full professor in experimental physics at Chalmers. Delsing's research focuses on quantum properties of superconducting devices. In particular, he studies quantum optics on chip, by investigating how superconducting artificial atoms interact with microwave photons. By placing the artificial atoms on piezoelectric surfaces, he also studies how the atoms interact with phonons in the form of Surface Acoustic Waves (SAWs). In recent years, Delsing's research has been focusing on quantum information in superconducting qubits. In 2018, he became the director of the largest Swedish effort in quantum technology – the Wallenberg Center for Quantum Technology (WACQT) – which he led until the end of 2024. He has contributed to the development of a Swedish quantum agenda. In 2020, the Swedish newspaper Dagens Nyheter portrayed him as the biggest competitor (and friend of 30 years) of Nobel laureate John Martinis in the quantum computing race. Delsing has, as of 2025, more than 130 peer-reviewed scientific publications, over 17000 citations, and an h-index of 69.

Awards and distinctions Delsing is a member of the Royal Swedish Academy of Engineering (IVA) since 1999, and of the Royal Swedish Academy of Sciences (KVA) since 2007. He was also a member of the Nobel Committee for Physics between 2007 and 2015, and its chairman in 2014. In 2009, Delsing was awarded the Gustaf Dalén Medal by Chalmers University of Technology. In 2015, he was granted the American Physical Society (APS) fellowship by the Division of Condensed Matter Physics "for pioneering research on the physics of single-electron devices, superconducting circuits, and microwave photonics". In the same year, he became a distinguished professor appointed by the Swedish Research Council (VR). In 2024, Delsing became a Wallenberg Scholar. With this funding, he plans to take Swedish qubits two kilometers underground, in a Canadian mine, to explore how to counteract cosmic radiation effects in quantum computers.

References

Illustrations

Worked examples

Example 1 — a first encounter with Per Delsing

Start with the simplest possible case. Write down what Per Delsing claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Per Delsing before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Per Delsing ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Per Delsing

In research: Per Delsing appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Per Delsing in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Per Delsing is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1959 births, Academic staff of the Chalmers University of Technology, Academic staff of the University of Gothenburg, so understanding it makes those chapters shorter.
In everyday life: Look for Per Delsing outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Per Delsing in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Per Delsing means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Per Delsing out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Per Delsing in simple terms?

Per Delsing (born 1959) is a Swedish physicist and professor in experimental physics at Chalmers University of Technology. Career Per Delsing studied engineering physics at Lund University, where he graduated with a master of science in engineering (Swedish: civilingenjörsexam) in 1984.

Why does Per Delsing matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Per Delsing?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Per Delsing.