The better you mirror each other's behavior, the better you appear to work together. In her PhD research at the unit Cognitive Psychology in Leiden, Friederike Behrens has developed a measure to capture the dynamic process of mirroring in numbers. PhD defense on 28 October.

Light reflects from a mirror, but where exactly does this reflection happen? Well, it depends, Martin van Exter and Corné Koks discovered. Their precise calculations, published in Optics Express, are important for designing optical cavities for quantum communication.

Stacked layers of graphene can act like a mirror for beams of electrons. Physicists Daniël Geelen and colleagues discovered this using a new type of electron microscope. In an article in Physical Review Letters, they describe their results, which could lead to the development of optics for electron…

Leiden alumnus Luc Amkreutz is a curator at the National Museum of Antiquities. His exhibition about the submerged landscape of Doggerland highlights what we can learn from prehistory. ‘Just like the people of Doggerland, we are confronted with climate change, but we are responsible for the speed of…

How do you bring education and practice closer together? In the revised Master MPS (Management of the Public Sector) it is done, for example, through the new profile course Leadership & Behaviour inside and between organisations. The Leiden Leadership Centre (LLC) is involved in organising the course.…

We develop open micro cavities to trap light in small volumes and thereby increase the interaction with intra-cavity emitters. Important aspects in this development are the optical penetration in the mirrors, coupling between optical modes, and scattering and clipping losses.

We investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.

The Old Observatory houses four historical telescopes. On this page you can learn more about them.

PhD Defence

With a pioneering project like the quantum computer, it’s a good idea not to place all your bets on a single horse. In Leiden’s Quantum Optics research group, instead of working on a Majorana-based qubit, people are working on a qubit based on an ‘artificial atom’. If that becomes the basis of the quantum…

Bouwmeester

Research in the van Exter lab focuses on quantum aspects of light and light-matter interaction. One of our long-term goals is to develop a reliable quantum memory, based on a single emitter in an open micro cavity.

The theater studio is a multifunctional space of 9.4 x 8 m, with wooden floor, mirrors and curtains. Music system and piano available.

Isis on the Nile. Egyptian gods in Hellenistic and Roman Egypt

On the first floor in the Hugyens building is the Studio Classroom, room 111, a 64 person room designed for groupwork for groups of 6-8. There are 8 group clusters around fixed tables, with wheeling chairs. Each cluster has its own wall-mounted monitor which is can be connected by HDMI, or which can…

Launched in 2017, The Importance and Power of Music in Our Society is an open online course, taught by Professor of Auditory Culture Marcel Cobussen and music philosopher Hafez Ismaïli M’hamdi and accessible to anyone with an internet connection.

Book by Soledad Valdivia Rivera

Lecture, Faculty Lecture

Lecture, on Microsoft Teams

Debate

Lecture

The process of unification and the character of the union are the central topics of Magnanimous Dukes and Rising States. Robert Stein mirrors continuity and modernisation in Burgundian times with the bankruptcy of the former dynasties and the decline of feudal government. The powerful towns played an…

Studies on representative bureaucracy have often confirmed the positive performance effects of bureaucracies mirroring the demographic characteristics of their clientele. However, little is known about the underlying individual level mechanisms leading to these outcomes.

How did Anglo-Saxons reflect on the experience of growing old? Was it really a golden age for the elderly, as has been suggested?

Research in the field of Etruscology at the Faculty of Archaeology of Leiden University (UL; the Netherlands) aims at exploring the history of the religious and ideological mentality of the Etruscans by studying archaeological, epigraphical and ancient written sources.

Promotor: W.T. de Groot

On February 7th, Lotte Dros-Hendriks succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Lotte on this great result.

The Buzz is located in Beehive, opposite the Wijnhaven building.

If you want to maintain a valid penal system, you have to continue to ask the big questions on punishment. Why do we punish people? What is permissible for the government and what is not? Philosopher of Law Jeroen ten Voorde examines these kinds of questions and keeps his academic colleagues and the…

The current migration flow into Europa demands effective measures. Leiden experts examine whether these measures are legal and hold up a mirror to policy-makers.

1. Social anxiety and factors determining school success in children. 2. Brain development in relation to cognitive, social and emotional development in adolescence

Stella Morgana defended her thesis on 31 March 2021

How do humans construct their self?

Nadine Akkerman's book Invisible Agents is the very first study to analyse the role of early modern women spies. The book foregrounds the agency of early-modern women, offering a corrective to the gender bias implicit in modern historiography.

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…

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

During the 1980s and early 2000s, authors like Alex Schmid and Andrew Silke demonstrated the paucity of first-hand insights being used to study terrorism and the consequences this had for the reliability of the findings beings presented. But to what extent have these issues endured?

Leiden University Library holds two drawings and in the region of a hundred prints by Rembrandt, as well as works by his pupils and the staff of his studio. That explains why this self-portrait etching dating from 1631, his Leiden period, can be seen on the façade of the University Library.

Develop a tool to assess land tenure, access to land and, and land tenure conflict in Timor-Leste

The quantum nature of matter and light has grown into a broad and fruitful research field for theorists and experimentalists alike. It combines foundational research with toward applications, the most well known of which is the quantum computer.

In this sub-project a selected number of narrative texts will be examined written in the Eurasian realm in the period 1300-1800, focusing on representations of kingship and royal authority.

LAK courses is part of Leiden University and can be found in the Lipsius building on the Cleveringaplaats. The abbreviation "LAK" stands for Leids Academisch Kunstcentrum (Leiden Academic Art Center)

Alex West’s dissertation,

During eye contact, people tend to mirror the pupil size of the person they are conversing with. This social mechanism is related to the trust an individual has in the person they are talking to, according to research by psychologists at Leiden University. Publication in PNAS.

In the logic and aesthetics of a republican baroque the existing world is the result of a moment in which for a split second two or more realities are equally real and after which only a singular one becomes actualized.

To what end and how does Plautus constantly underline the Helleni(sti)c provenance of his art? How does this aspect relate the author’s originality?

This project, executed by Marieke Hendriksen MA MRes, aims at an analysis of how the early modern anatomical collections of Leiden University were rooted in ideals of perfection in different fields of knowledge and expertise.

With each discovery that is made, the universe reveals a fraction of its secrets: the most distant galaxies and quasars, the atmosphere of exoplanets, evidence of dark matter, complex molecules in space. This is what fills the days and nights of the researchers from the Leiden Observatory and their…

Simulations of galaxies help researchers understand astronomical observations better. The EAGLE simulation, a large project in which Leiden astronomers play a leading role, shows the evolution of the Universe, from just after the Big Bang to the present day.