Geometric phases lead to a nontrivial interference result when an electron's different quantum mechanical paths choices encircle a magnetic coil in an Aharonov-Bohm experiment.

Glucocorticoids are potent anti-inflammatory drugs widely used clinically to treat various inflammatory and immune conditions. However, two main clinical problems limit their use. GCs trigger severe side effects and they induce acquired glucocorticoid resistance, especially during chronic systemic treatment…

This thesis investigates the contribution of quantum computers to machine learning, a field called Quantum Machine Learning. Quantum Machine Learning promises innovative perspectives and methods for solving complex problems in machine learning, leveraging the unique capabilities of quantum computers…

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

De masterspecialisatie Classics van de Universiteit Leiden geeft je een multidisciplinaire opleiding in de Griekse en Romeinse wereld.

Quantum annealing belongs to a family of quantum optimization algorithms designed to solve combinatorial optimization problems using programmable quantum hardware. In this thesis, various methods are developed and tested to understand how to formulate combinatorial optimization problems for quantum…

Systems with local constraints is a new finding in recent researches on complex systems. The heterogeneous spatial interactions and the temporal dependencies among those numerous units make it difficult to describe by traditional statistical physics.

Het verbouwde Rijksmuseum van Oudheden is weer open voor het publiek. Conservator Ruurd Halbertsma, Leids hoogleraar archeologie, vertelt waarom vernieuwing nodig was: 'Meer zichtbare samenhang tussen culturen, meer context en kunstzinnig licht.'

De onderzoeksmaster Egyptology (research) van de Universiteit Leiden is een multidisciplinaire opleiding in de talen, literatuur en cultuur van het Oude Egypte.

De masterspecialisatie Egyptology van de Universiteit Leiden is uniek in Nederland; je bestudeert het Oude Egypte, ooit een belangrijke speler in de wereldgeschiedenis.

In de onderzoeksmaster Hebrew and Aramaic Studies (research) van de Universiteit Leiden is gericht op het bestuderen van de Hebreeuwse en Aramese taal en cultuur in de ruimste zin.

De masterspecialisatie Hebrew and Aramaic Studies van de Universiteit Leiden is gericht op het bestuderen van de Hebreeuwse en Aramese taal en cultuur in de ruimste zin.

De onderzoeksmaster Classics (research) van de Universiteit Leiden maakt je vertrouwd met multidisciplinair onderzoek naar de Griekse en Romeinse wereld.

De onderzoeksmaster Assyriology (research) van de Universiteit Leiden is een multidisciplinaire opleiding in de talen, literatuur en cultuur van het Oude Nabije-Oosten.

De masterspecialisatie Assyriology van de Universiteit Leiden leidt je op tot volledig getrainde wetenschapper, die op een kritische en creatieve manier onafhankelijk problemen kan oplossen.

Promotores: H.W. Lenstra, B. Erez, Co-promotor: L. Taelman

Our recent excavations have focused on the more recent New Kingdom/Late Period (ca. 1500-332 BCE) material.

De 260 jaar oude wetenschappelijke prijs van het Legatum Stolpianum wordt dit jaar toegekend aan twee goed geschreven historische studies van hoge kwaliteit, met actuele betekenis. Een van de winnaars is de Leidse classica Tazuko van Berkel.

Dit project identificeert en beschrijft de belangrijkste Indo-Europese talen en taaltakken en heeft tot dusver geresulteerd in twaalf delen, gepubliceerd als The Leiden Indo-European Etymological Dictionary Series (Brill, Leiden).

This thesis covers several aspects of quantum algorithms for near-term quantum computers and its applications to quantum chemistry and material science.

This thesis covers various applications of topology in condensed matter physics and quantum information.

This dissertation is a collection of four research articles devoted to the study of Kummer theory for commutative algebraic groups.

Promotor: M. Ubbink, Co-promotor: G. Siegal

Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…

We prove a p-adic version of the work by Gross and Zagier on the differences between singular moduli by proving a set of conjectures by Giampietro and Darmon, who investigated the factorisation of a rational invariant associated to a pair of CM-points on a genus zero Shimura curve, obtained as the ratio…

Quantum computers are a proposed fundamentally new type of computer. They aim to perform some computations much faster than previously possible by exploiting phenomena at the quantum scale, called superposition and entanglement.

De tweejarige masteropleiding Physics wordt aangeboden door het Leids Instituut voor Onderzoek in de Natuurkunde. De opleiding is theoretisch en experimenteel. Er is ruime aandacht voor onderzoekstraining. Ook bieden we veel keuzemogelijkheden en op maat gemaakte, individuele studieprogramma’s.

Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding.

De onderzoekers van het departement ‘World Archaeology’ van de Faculteit Archeologie richten zich in hun onderzoek op verschillende periodes en regio’s: van de oorsprong van de mens tot aan de Middeleeuwen en de moderne tijd, en van Azië tot Zuid-Amerika.

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Promotor: F. Arbab

During my PhD research, I studied the photon statistics of light emitted by a microcavity that contains a single quantum dot (QD) on resonance.

Promotor: S.M. Verduyn Lunel

Promotor: J.G.E.M. Fraaije, Co-Promotor: A. Kros

The unit residue group, to which the present thesis is devoted, is defined using the norm-residue symbol, which Hilbert introduced into algebraic number theory in 1897.

Promotores: Prof.dr. S.J. Edixhoven, Prof.dr. E. Ullmo (University Paris-Sud)

DNA carries various forms of information. Out of these forms of information the most well-known is classical genetic information.

Onderwijs over quantum is ontzettend belangrijk. Daarom ontwikkelt Quantum Leiden onderwijs en voorlichting over de quantumtechnologie, op alle niveaus, van middelbare school tot Masters-studie. Zo leiden we de onderzoekers van de toekomst op, en bereiden we de jeugd voor op een quantumtoekomst.

This thesis discusses several questions regarding the double ramification cycle as a Chow class on the moduli space of stable n-pointed genus g curves using tools from so-called logarithmic geometry.

This thesis is concerned with the constitution of chiral responsive matrix assemblies that may undergo light-driven conformational changes and self-select vibrations to develop vibronic states for driving semi-classical coherent transfer with nearly 100% yield in a lossless NCAP process.

Thermodynamics is one of the founding scientific pillars that has helped us better understand heat engines, biology, ecosystems, and even black holes. While it fundamentally describes large systems by examining the bulk behavior of their constituents, it is anchored in the statistical equivalence of…

Promotor: Prof.dr. C.W.J. Beenakker

Classical statistical methods, such as p-values, are difficult for researchers to apply correctly. They for example do not allow drawing conclusions from a study early, or for extending a study with extra research groups that want to make their data available later.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

Promotores: J. Zaanen, A. Parnachev

Understanding DNA repair mechanisms is essential for advancing plant biotechnology and crop improvement. This study investigates how double-strand breaks (DSBs), induced by CRISPR/Cas systems, are repaired in the model plant Arabidopsis thaliana, and how these processes influence Agrobacterium tumefaciens…

New drugs for use as tuberculosis (TB) treatment are needed due to the constrains of classical antibiotics against TB and the rise of antibiotic-resistant strains, making TB a harder and harder disease to treat.

This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.