An all-optical transistor, a molecule-sized sensor and a new kind of single-photon source for quantum communication. All dreamed applications of fundamental physics that are one step closer thanks to Robert Smit. On 12 June, he defended his PhD thesis with distinction.

Anthropologist Marit Brun captured Leiden’s student life during her studies, which won her the ‘Best Leiden photo’ competition. She now wants to continue with photography and making travel guides with a nod to anthropology.

You should start working now, and the positive results will only be seen long after your term has expired. That is just about the worst thing you can say to politicians and policymakers. Yet that is exactly the message of two recent reports on sustainable resource use from the Centre for Environmental…

Andrea Warnecke joined the Institute for History in August 2021 as an Assistant Professor in the History and International Studies section. This year, she will get a tenured position. Below, she introduces herself.

PhD candidate Layla van Wieringen examined how extremist beliefs are passed on within households. In her dissertation ‘Rotten Trees, Bad Apples? Understanding the Intergenerational Transmission of Extremism’, she reveals a reality that media and politics rarely address.

Jeroen Touwen has been reappointed as Vice-Dean of the Faculty of Humanities from 1 January. ‘The Faculty Board’s role is to serve the organisation: we try to manage the University as effectively as possible with the available resources, so that research and education can flourish.’

A smart city is of no use if its residents don’t trust it. Tanaquil Arduin, Chief Data Officer at the Municipality of The Hague, and Bram Klievink, Professor of Digitalisation and Public Policy at Leiden University, explain how this can be avoided – to some extent. ‘Make sure civil servants and residents…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

We are proud to share that Hadassah Drukarch, a graduate of our Advanced LL.M. in Law and Digital Technologies (class of 2022-2023), has been honored with the prestigious 2023 Brinkhof Internet Thesis Award for her thesis research that explores the intricate interplay between data protection regulation…

Deze week sluiten we het academisch jaar af met verschillende FGGA-studenten, waarin zij hun zomer- en toekomstplannen vertellen, maar ook terugblikken op het afgelopen jaar: ‘Ik vond het ontzettend prettig om weer terug te komen naar de fijne sfeer op Wijnhaven.’

Imparting students with a critical attitude and cross-curricular skills. That is what Rawi Ramautar wants to strive for as the new programme director (OD) of the bachelor of Bio-Pharmaceutical Sciences. 'A programme director has to create a programme of which students say: I find it challenging and…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

In November 2024, Dr. Hana Kubatova (Charles University, Prague) visited Leiden to talk with students and our community about academic freedom and neutrality at the university. This meaningful event was planned by student leaders from CIROS (Community for International Relations and Organisations Students)…

Damien van Puyvelde has received funding (over 47.000 euro) from a new Research Council pilot for his study 'Open-source research and the war in Ukraine: intelligence for the people by the people?' We asked the researcher five questions about this project and the opportunities this creates for him.

Jasper Knoester is the dean of the Faculty of Science. How is he doing? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.

Digital journalism is transforming the way in which information and communication technologies are used by media workers. With this change journalist practices, norms and values are also being reshaped. This is the conclusion of Tomás Dodds PhD research.

During the second Arthur Docters van Leeuwen Lecture on 2 December, AIVD Director Erik Akerboom underlined how the changing threat landscape demands reflective leadership, transparency where possible and close cooperation to protect the democratic legal order.

Thursday 15 January starts with a long journey and ends with an equally long working day full of current issues. Jasper visits the Mathematical Institute with the scientific directors of our faculty and attends a meeting on collaboration with the Ministry of defence.

When politicians claim they can make major differences with their migration policies, they’re raising false expectations. The opportunities for the government to restrict migration are in fact very limited. And what about the little room they do have? Mark Klaassen’s advice is to make use of those opportunities…

Getting to know all his colleagues as fast as possible, and learning about the faculty’s strengths: these will be Jasper Knoester’s first challenges. Jasper became the new Dean of the Faculty of Science on 1 January, and he is optimistic about the corona restrictions. ‘Obviously, this isn’t the start…

How do we know what a quantum computer is good for when it hasn't been built yet? That's what PhD candidate Casper Gyurik investigated by combining two terms you often hear: quantum computing and machine learning.

Hordes of photographers, students trying to catch a glimpse and take selfies, and cheering people at the entrance to Wijnhaven. Canadian Prime Minister Justin Trudeau and Prime Minister Mark Rutte were received like true pop stars, in the late afternoon at Leiden University’s Campus The Hague.

Legal protection. What do those involved in youth care and child protection understand by this concept? And what needs to change to improve legal protection? This question was explored by researchers from Leiden University’s Department of Child Law. Their research fits with the government’s ambition…

Democracy may lead to more deforestation in the tropics. So write environmental scientist Joeri Morpurgo and his colleagues in the prominent scientific journal Biological conservation. They found that competitive elections are associated with more loss of tropical rainforest than elections without competition.…

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How can you ensure that more experimental drugs reach the finish line? At the moment, only one in twenty cancer drugs that are tested on humans makes it to the market. This is an enormous loss for patients and society. With a grant from the National Growth Fund, Oncode-PACT aims to efficiently select…

Manon Post and Efstathia Dionysopoulou recently joined the Institute for History as a PhD candidate and postdoc in the framework of the 'Anchoring Innovation' program. Below, they introduce themselves!

Children who come into contact with the police are not destined to become long-term offenders. This appears from research conducted by Babette van Hazebroek, who defends her dissertation on 30 September 2021.

From assistance in the event of natural disasters to peace-keeping missions. As a communication adviser, Leonoor van Poelgeest goes to all those destinations where the Royal Navy are active. Why did she choose this work and how has her Public Administration study helped her?

On 16 May, three researchers from Leiden University will present their findings on the democratic consequences of decentralisation at a workshop in Leiden. Their research project, Downsize My Democracy?, shows that decentralisation does not automatically lead to a stronger democracy. On the contrary,…

Floreat et crescat. Flourish and grow. That was what was wished for the Mathematical Institute at its opening. Now, the institute proudly celebrates its 70th anniversary. Time to reflect on how it all began. And importantly, how is it doing now?

The Dutch Research Council (NWO) has awarded Vidi grants to Leiden researchers.

An international team of astronomers has revealed the first 'chemical profile' of an exoplanet's atmosphere. The team, including Leiden astronomer Yamila Miguel and provenda Amy Louca, made the profile using so-called Early Release Science data from the James Webb Space Telescope. The results have been…

Countries that import plastic waste recycle an average of at least 63 percent of it. This is surprising, as we previously believed that the vast majority was incinerated or ended up as litter. This was discovered by PhD candidate Kai Li and his colleagues from the Institute of Environmental Sciences in…

When we talk about the Kingdom of the Netherlands, it is not just about the Netherlands. On the contrary: our Kingdom consists of no less than four countries, three of which are Caribbean islands. This structure is complex, to say the least. Although all countries are officially equivalent, in practice…

How do you co-create with researchers in other parts of the world? LDE wants to gather and share knowledge on the grand challenges and to do so across national borders. A delegation of 27 researchers will therefore travel to Indonesia at the end of October to take part in the LDE-BRIN Academy.

For thirty years, the Dutch Newspaper AD conducted an annual search for the best herring. This came to an end when economist Ben Vollaard, based on a statistical analysis, claimed it was rigged. But that claim doesn't smell right, says Leiden statistician Richard Gill. ‘The way you code and process…

On Tuesday 30 September 2025, PhD candidate Kathleen Brown will defend her dissertation 'Deception, Risk, and Evasion: The Politics of Sovereign Debt in Emerging Markets' in Leiden’s Academy Building. Her research sheds light on the hidden world of sovereign debt politics, revealing how governments…

Professor Bussemaker and Professor Koenders draw lessons from the handling of the current corona crisis. In a blended guest lecture with some 60 students in Wijnhaven and some 250 online participants, they entered into a discussion led by Willemijn Aerdts. The guest lecture took place on May 25.

A million people in the Netherlands attempt to quit smoking each year, often without lasting success. Health psychologist Kristell Penfornis carried out doctoral research into the role of self-image in smoking cessation. “If smoking is normal in your social circle, it more easily becomes part of your…

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On 11 March, pharmaceutical company Janssen received approval to launch its corona vaccine on the European market. This made Janssen the fourth company to be given the green light by the European Medicines Agency. As Lead of the Janssen Campus in the Netherlands, Biology alumnus Bart van Zijll Langhout…

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Public agencies are keen to use new technology such as AI to speed up their primary processes. But the internal organisation is often a major stumbling block. SAILS researcher Friso Selten conducts research at the interface between data science and public administration.