The field of exoplanet research is rapidly advancing through the development of new technology, observing techniques, and post-processing methods.

Promotores: Prof.dr. C.U. Keller, Prof.dr. H.C. Gerritsen

This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.

Research groups in the Quantum Matter & Optics programme investigate electronic properties of matter and light-matter interactions with emphasis on quantum information.

Promotie

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.

Promotor: Prof.dr. M.A.G.J. Orrit

Scattering of light in the presence of nano-structured materials, i.e. with features in the order of the wavelength of the light or smaller, reveals details of how light interacts with matter at the nanoscale.

Single-molecule spectroscopy has become a powerful method for using organic fluorescent molecules in numerous applications.

The ADAPTED (Alzheimer's Disease Apolipoprotein Pathology for Treatment Elucidation and Development) project is a major new initiative to investigate an area of Alzheimer's Disease (AD) research which has previously received little attention. The project aims to improve understanding of the function…

Since the early 1990s, one can isolate the optical signal of a single molecule and single-molecule spectroscopy has quickly grown into an important research field.

Optical projection tomography (OPT) is a tomographic 3D imaging technique used for specimens in the millimetre scale.

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 program of the QO group has three leading themes: Optical Physics, Quantum Optics, and Photon-Matter Interactions. We work mostly at the boundaries between these themes with entanglement as a bridging and binding agent.

Promotor: D. Bouwmeester, Co-promotor: D. Kraft

Promotor: Prof.dr. E. Deprettere

Advancing the understanding of the interaction of light and matter on the single-quantum level is important for near-future quantum technologies but also to answer fundamental questions.

Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)

Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)

In 2019, Aliaksandr Lukashenka marks a quarter of a century as the first, and so far only president of the Republic of Belarus. This new book by Dr. Matthew Frear, Assistant Professor of Russian and Eurasian Studies, offers the most up-to-date analysis of government and politics in a country usually…

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.

This thesis describes the implementation and on-sky demonstration of high-resolution integral-field spectroscopy for extreme adaptive optics systems that are used to find and characterize exoplanets.

At the center of this research project lies a practice-based, artistic exploration of the impact of digitalization on the lived reality of both physical and cognitive labor.

Promotor: Prof.dr. M.K. Richardson, Co-Promotor: F. Witte

One of the key limitations of the direct imaging of exoplanets at small angular separations are quasi-static speckles that originate from evolving non-common path aberrations (NCPA) to which the primary adaptive optics system is inherently blind. The main focus of this thesis is the development and…

The Western Mediterranean is a key region to understand human dispersal events within and out of the African continent as well as for the eventual replacement of Neanderthals by anatomically modern humans during the Pleistocene. Central to any conclusive interpretation of archaeological and palaeoclimatic…

Developing methodes to understand the evolution of patches in natural ecosystems

Research has shown that the impact of feedback can be very powerful on second language acquisition. However, how to provide adaptive feedback on speaking skills in foreign languages and how to provide differentiated support in secondary schools in regular secondary schools classes of often 25-30 students?…

Brendan Carroll promoted On Thursday October 30th Brendan Carroll successfully defended his PhD dissertation entitled:

Leiden physicists have created a light source that emits individual particles in an identical state through optical fibers. Using this setup, their measurements can last longer and are more efficient, meaning they can perform more in-depth research on bizarre quantum effects, such as interference and…

What is the optimal design of sandy solutions for sustainable climate change adaption, from an ecological, biophysical and societal point of view?

Promotor: P.M. Brakefield

This thesis concerns the relation bettween the good reduction of Shimura varieties and the associated loop groups.

Our world may seem unpredictable and uncertain, especially when others are involved. When interacting with others, we cannot know for sure what they may be thinking or planning to do, but we do a good job guessing. This may not be so easy for everyone…

This thesis focuses on addressing four research problems in designing embedded streaming systems.

What practical knowledge do mentor teachers have of adaptive mentoring and of individual differences between student teachers?

Promotor: M. Ubbink, Co-Promotor: R. T. Dame

High throughput microscopy

This thesis consists of two subjects, that are both a consequence of radiation pressure.

In this article, Makszin developed a conceptual framework for the operating mission of an independent Central Bank and traced changes in the operating mission of the Hungarian National Bank over its recent 27-year history together with Sebők and Simons. This study aims to understand the dynamics of…

The main question I want to answer is about the mutual influence between the cultural and settlements changes that occurred between the Bronze and the Early Iron Age in Margiana and the management of water resources.

The Clinical Epidemiology department at the LUMC has set up a series of lectures for asylum seekers. The series has become a huge success.

How do cognitive, motivational, and affective processes interact to select actions?

Light can be used to apply forces on single cells. Focused lasers have been used by physicists to tweeze particles and to manipulate them. These so called “optical tweezers” can be used as mechanical phenotyping tools for characterising the mechanics of materials and living objects.

This proposed research uses ego-documents from visual artists that were not intended for publication to reassess the scholarly debate on the demise of the Russian Avant-garde aesthetic in the twenties and early thirties of the 20th century.

During the summerbreak the opening hours will be changed for the Wijnhaven building.

Optical detection of a single electron using a single molecule has never been done. Leiden physicist Michel Orrit and his team have now identified a molecule that is sensitive enough to detect an electron at a distance of hundreds of nanometers. The results are published as a cover article in ChemPh…