Leiden physicists have developed a way to address how accurately a superconducting single photon detector (SSPD) can be characterized by detector tomography. SSPDs are not fully understood, and tomography is a key element to determine how these devices detect light. A better understanding of these detectors…

MRFM combines the principles of magnetic resonance and atomic force microscopy.

Physicists at the Leiden Institute of Physics (LION) conduct fundamental research into physical phenomena. They are inspired by curiosity and the desire to know more about the world in which we live. This research has always paved the way for new practical applications. These are something that the…

Physicists at the Leiden Institute of Physics (LION) conduct fundamental research into physical phenomena. They are inspired by curiosity and the desire to know more about the world in which we live. This research has always paved the way for new practical applications. These are something that the…

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.

Physicists understand little about quantum matter, which is a building block of future quantum computers. Theorists have now discovered that black holes with ‘dreadlocks’ harbor a similarly exotic order pattern, which makes calculations on quantum matter easier. Publication in Physical Review Letter…

The focus of our theoretical physics research is the nature of macroscopic matter that is in one or the other way still in the grip of quantum physics.

We study the dynamics of individual emitters in micro cavities.

PhD defence

How can pupils and students learn to get a grip on complex 'swamp situations'? Inaugural lecture in abbreviated form held by prof.dr.ir. Fred Janssen on the acceptance of the post of professor of science education at Leiden University on 19 June 2017.

The master's programme Cultural Anthropology and Development Sociology foregrounds ethnography as a method, to create insights into everyday cultural practices relevant to global processes of change. You can either propose your own individual research project (Global Ethnography), conduct more applied…

The master's programme Cultural Anthropology and Development Sociology foregrounds ethnography as a method, to create insights into everyday cultural practices relevant to global processes of change. You can either propose your own individual research project (Global Ethnography), conduct more applied…

Physicist Sense Jan van der Molen researches materials that do not exist in nature. ‘It’s fascinating to see how the properties of a material change if we manage to make it super thin.’ He will give his inaugural lecture on 21 October.

The financial sector is an appealing target for hackers. For that reason, lawmakers and regulators are going to great lengths to make the sector more resilient to cyber attacks. One recent measure was the introduction of the Digital Operational Resilience Act (DORA). This new EU regulation is extremely…

As Board Secretary, Corry Donner aims to be a ‘spider in the web’; someone who keeps a watchful eye on and brings together all the different perspectives of the institute’s board. Now she's left her carefully woven web at the university and transfer her tasks to her successor. Last September, we talked…

To what extent are there differences between countries in and outside the European Union and the Schengen area in the level of crimmigration, the merger between migration control and crime control, and to what extent can these differences be explained by the way in which state and non-state actors in…

PhD defence

Big Science, commonly defined as conventional science made big in three dimensions, namely organizations, machines, and politics, brings a plethora of different stakeholders together, often for a long period of time. This includes policymakers, scientists, (scientific) managers as well as local “host”…

The master’s specialisation Research in Physics, Quantum Matter and Optics at Leiden University offers a thorough experience on the front line of physics research with a practical training of communicative and computer skills. The programme focuses on Condensed Matter problems, such as Molecular Electronics,…

The research group of Semonti Bhattacharyya at the Leiden Institute of Physics studies quantum transport measurements in Van der Waals heterostructures.

In this thesis, we describe the latest advances in SQUID-detected Magnetic Resonance Force Microscopy (MRFM).

Leiden physicist Milan Allan and his group have discovered an apparent paradox within a material that has zero electrical resistance. They measured trapped charges, while charges should in theory keep flowing in the absence of resistance. The discovery could provide a missing piece of one of the big…

In January 2014, the research project The Promise of Organization hosted a fruitful three-day conference:

We are a dynamic research group at the Leiden Institute of Physics. Our aim is to explore and understand quantum materials, including strange metals, high-temperature superconductors, and quantum critical electron matter.

In the spirit of 'unity in diversity', our objective is to promote insight into and appreciation for the wonder that the same physical laws and mathematical concepts apply to the whole of nature, from the largest to the smallest energy and length scales. We strive for the application of abstract theoretical…

The worldwide race to the quantum computer is in full swing. This computer can take on computing tasks that we can only dream of today, such as finding proteins that can be used as medicines in seconds flat. Leiden physicists have discovered how the Majorana particle can be used as a building block…

Fons Verbeek participates in a taskforce on digital atlassing in the rodent brain. This taskforce has developed a common reference framework so that the different atlasses that are being used, are interoperable.

Gross domestic product (GDP) is the most powerful indicator in the world. And that while a large part of the scientific community sees it as an outdated figure. Why are we only looking at economic growth? And why do welfare, sustainability and inequality not count? Environmental economist Rutger Hoekstra…

Making the most vibration-free, cryogenic scanning tunneling microscope in the world. A bold mission, but one that PhD candidate Irene Battisti successfully executed together with the Fine Mechanical Department. The new microscope might shed light on how unconventional superconductivity works. PhD Defence…

Former PhD, Bachelor and Master students of the Van Exter Lab

The Cryogenics Department has a liquid helium production unit and an automatic liquid nitrogen filling plant.

Studying languages enables you to unearth a lot of valuable information about humans: it reveals our history and explains cultural differences and it even illustrates the process of learning new information. The University is sharing its knowledge of and passion for languages in various new ways, including…

1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…

In the documentary ‘Pretend Student’, former students talk about why they let everyone believe they were still studying. How can you make sure you don’t end up in such an impossible situation? Four questions for Leiden Student Dean, Romke Biagioni, who worked on the documentary.

With the childcare benefits scandal in the Netherlands, certain interests in society were hidden for long to politics and governance. With the farmers’ protests, on the other hand, the major economic and political interests at stake were hidden for long to society. In her inaugural lecture on 16 September,…

A few weeks ago, Dutch pension giant ABP decided to divest from fossil fuels. But is this actually going to help the climate? Natascha van der Zwan, Arjen van der Heide and Philipp Golka (Institute of Public Administration, Leiden University) address this question in our new article for S&D.

Many Humanities scholars keep a blog of their own. This summer, we’re putting these in the spotlight. For this week’s interview, we sat down with dr. Florian Schneider of the Politics East Asia blog.

From the NWO Open Competition Frank den Hollander has been awarded a two year postdoc grant, entitled

Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

Salma Balazadeh, Víctor Carrión, and Jos Raaijmakers, biologists at the Institute of Biology Leiden (IBL), have successfully applied for an NWO grant and got awarded 730.000 euros. The board of NWO Domain Applied and Engineering Sciences awarded funding for their project within the Open Technology Programme…

Two weeks after 3 October the Leiden canals were still full of plastic disposable cups. Auke-Florian Hiemstra and fellow students have fished thousands of these cups out of the canals and photographed them. Now they put a photo of one of these canal cups on Instagram every day.

Fathers and mothers bring children up differently. Mothers are more likely to correct children for bad behaviour, for example. This is one of the findings of PhD research by Liesbeth Hallers-Haalboom. PhD defence 7 October.

A quarter of all Dutch students suffer burn-out symptoms, and an even greater percentage regularly experience emotional exhaustion and tiredness. At a symposium on 7 May students were given tips for handling stress.

This week, from the 9th until the 13th of May, the university elections will take place. As a member of the university staff, you may vote on the parties of staff representatives.

Season 2 of the Leiden Psychology podcast has started, and we're kicking it off with a special Q&A featuring our new hosts Aziza and Priya. In this episode you are offered a chance to get to know them better.

The Gouy-Chapman theory describes what happens near an electrode when it is in contact with a salt solution, but this description does not match reality. Researcher Kasinath Ojha, assistant professor Katharina Doblhoff-Dier and professor Marc Koper present a new version. ‘The next generation of textbooks…

High-temperature superconductivity is one of the big mysteries in physics. Milan Allan’s research group used a Josephson Scanning Tunneling Microscope to image spatial variations of superconducting particles for the first time, and published about it in the journal Nature.

On the second day of the EL CID week, hundreds of new students set foot in ‘their’ law faculty for the first time. Today, they will be introduced to the history and ways of the University. Exciting and fun at the same time. ‘Things are getting real!’

With the opening on 19 January 2017 of the Service Center International Staff (SCIS), foreign employees can get much more support than before. If you have any questions, feel free to visit the Service Center in the Administration building at Rapenburg.