2,334 search results for “quantum mechanisms” in the Public website
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Regulation of autophagy-related mechanisms during bacterial infection
Autophagy is a fundamental degradative process, maintaining cellular homeostasis and functions in host defense against intracellular pathogens, including mycobacteria and Salmonella.
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Single Molecule Detected for Use in Quantum Network
Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…
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Novel system-inspired model-based quantum machine learning algorithm for prediction and generation of High-Energy Physics data
Assistant Professor Vedran Dunjko and his team received a gift from Google to support their quantum research. The research focuses on whether quantum computers can provide new ways of understanding the mysteries of high-energy physics.
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Chemical bond versus electromagnetic waves
Vibrating carbon monoxide molecules adsorbed at the surface of a salt crystal stop moving after a few milliseconds. Scientists now discovered this is dominantly due to the emission of electromagnetic waves. The role of the chemical bond at the surface thereby appears to be less important than previously…
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The Lead Zeppelin
As an alternative to the diving board shaped force sensor, we are now developing a magnetically levitated small superconducting particle – or ‘Lead Zeppelin'' – as our mechanical resonator. We explore routes towards detection of gravity between small objects.
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Deciphering the complex paramagnetic NMR spectra of small laccase
Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.
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Young talent: quantum scientist receives Young Scientist Prize
Only 35 years old and already a research group leader, on his way to tenure. And: numerous papers, grants and fellowships to his name. Leiden physicist Jordi Tura i Brugués receives today the Young Scientist Prize for his outstanding contributions to quantum research.
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Tom O'Brien
Science
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Vasilii Bokov
Science
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Exploring the mechanisms of metastatic onset for novel treatment strategies
This thesis represents a comprehensive investigation into the control of cancer stemness and metastatic initiation using a combination of advanced zebrafish xenograft models and in vitro assays.
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Vibration Isolation
To be able to measure small forces or small deviations from Boltzmann, the external vibrations at the resonance frequency must be very low. To achieve this, we have developed a very soft vibration isolation system and combine it with several other measures to reduce vibrations in our dilution refrigerators.…
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Stimulated Raman Adiabatic Passage in Optomechanics
In the thesis we demonstrated an 85% state transfer efficiency between two mechanical modes coupled to a common optical mode via stimulated Raman adiabatic passage (STIRAP) in the classical regime. We also showed possibilities to manipulate quantum states of the mechanical modes via STIRAP.
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Mechanism-based inhibitors and probes for neuraminidases
Neuraminidases are enzymes that cleave glycosidic linkages of sialic acid. These enzymes are involved in influenza infections as well as in many cellular processes in mammals and micro-organisms.
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Serge Fehr appointed as Professor Quantum information theory
As of 1 June, Serge Fehr has been appointed as Professor Quantum information theory at the Leiden Mathematical Institute (MI). Fehr is employed by Centrum Wiskunde & Informatica (CWI) and as of his appointment works one day a week at the MI. Fehr’s research is focused on quantum cryptology and will…
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Want to know more about quantum? These games make it fun
Tic tac toe, but with quantum effects. That makes learning the principles of quantum technology a piece of cake. This is the aim of a new start-up founded by researcher Evert van Nieuwenburg: QuantumPlayed. ‘Quantum is all around us and everyone should be able to learn about it.’
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Towards chemically accurate simulation of molecule-surface reactions
This perspective addresses four challenges facing theorists whose aim is to make quantitatively accurate predictions for reactions of molecules on metal surfaces, and suggests ways of meeting these challenges, focusing on dissociative chemisorption reactions of H2, N2, and CH4.
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Mechanical Response of Foams: Elasticity, Plasticity, and Rearrangements
Promotor: M.L. van Hecke
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The lead zeppelin: a force sensor without a handle
Promotor: T. H. Oosterkamp
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Low energy electron transmission through layered materials and chiral organic films
In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…
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Evert van Nieuwenburg
Science
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Quantum optics for asylum seekers
The Clinical Epidemiology department at the LUMC has set up a series of lectures for asylum seekers. The series has become a huge success.
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New professor Vedran Dunjko finds real-world problems that a quantum computer can solve
Vedran Dunjko appointed to full professor of quantum computing at Leiden University, the Netherlands.
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A new building block for the quantum computer
The race to build the first quantum computer is still ongoing, but Morten Bakker has made big step forward in that process with qubits. A qubit is a unit of quantum information that can be produced in large numbers on chips. Qubits capable of exchanging photons (light particles) could be used in the…
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The future of quantum
What does the future of quantum look like? Vedran Dunjko (Assistant professor at LIACS and LION) is co-founder of the applied quantum algorithms (aQa) leiden interdepartmental initiative research that will investigate this. They are part of the Quantum Delta NL consortium that was recently awarded substantial…
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Segments and rules: a comparative study into the computational mechanisms underlying language acquisition
In this project we study the properties of statistical- and rule-learning mechanisms in relation to the acquisition and evolution of language. We ask to what extent these mechanisms are unique to humans - or to human language - by comparing the acquisition of vocal structure in two species: humans (infants)…
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the Process of Bacterial Cell Death: Novel Antimicrobials and Their Mechanisms of Action
This thesis describes the antimicrobial discovery strategy developed in our group, the den Hertog Group at the Hubrecht Institute. It includes a cultivation-based screening approach for novel antimicrobial agents from the source of fungi, and a bacterial time-lapse imaging approach for antimicrobial…
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Segments and rules: a comparative study on linguistic rule learning mechanisms
A central and much debated topic in the study of language acquisition concerns the nature of the learning mechanisms that are required. Are the computational and learning mechanisms that guide learning about language structure special and specific to language or humans?
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Capacity to Health Emergencies: Insights from EU Crisis Management Mechanisms
Despite an increased EU role in the preparedness, monitoring and coordination of health emergencies over the past two decades, Member States’ responses to the first wave of COVID-19 were surprisingly uncoordinated. In light of calls to improve cooperation regarding future health emergencies, this article…
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A time-space translation mechanism for patterning the vertebrate anteroposterior axis
My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.
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Freedom of additional signals on genes: on the combination of DNA mechanics, genetics and translation speed
DNA carries various forms of information. Out of these forms of information the most well-known is classical genetic information.
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Setup: Low Temperatures
A lot of our research is performed at temperatures close to absolute zero, among other reasons because this increases the sensitivity of the measurements.
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Google gift for quantum research
Assistant Professor Vedran Dunjko and his team receive a €100,000 gift from Google to support them in their quantum research. The research focuses on whether quantum computers can provide new ways of understanding the mysteries of high-energy physics. Google is committed to supporting ambitious research…
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Random walks on Arakelov class groups
The main topic of this PhD thesis is the Arakelov ray class group of a number field, an algebraic object that contains both the ideal class group structure and the unit group structure.
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The quantum computer: it doesn't exist yet, but still we understand increasingly better what problems it can solve
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.
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Developing quantum software with a grant of 18.8 million euros
The first larger quantum computers will soon be available. These computers need new software. Researchers at Leiden University have been awarded a Gravitation grant to develop the necessary software. They will be collaborating with colleagues from other research institutions.
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Exploring and exploiting the mechanism of mycelial pellet formation by Streptomyces
Promotor: G.P. van Wezel
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Unraveling the auxin mechanism in 2,4-D induced somatic embryogenesis in Arabidopsis thaliana
Promotor: P. J. J. Hooykaas, Co-promotor: R. Offringa
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Do fungi differ? Understanding the mechanisms of mycorrhizal fungal impacts on soil C sequestration
How presence, abundance and enzymatic activities of AM and EM fungi differently affect soil carbon sequestration processes?
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Major NWO subsidies for research on dark matter and quantum experiments
Astronomer Koen Kuijken and physicist Tjerk Oosterkamp have each been awarded a major subsidy by NWO. The funding will allow them to construct new research facilities.
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and just transition: the case of the EU's Carbon Border Adjustment Mechanism
Lecture, European Union Seminar
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Exploring the mechanism of targeted nanoparticle-mediated drug delivery using the zebrafish model
Exploring the mechanism of targeted nanoparticle-mediated drug delivery using the zebrafish model
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Mechanisms and consequences of horizontal gene transfer in cell wall-deficient cells of Kitasatospora viridifaciens
The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…
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Post-quantum cryptography should keep our DigiD, bank accounts and state secrets safe
Our banking, DigiD and sensitive medical data: what if our entire digital infrastructure can no longer be trusted? Jelle Don has this question permanently in mind as he goes about his research. And that is no bad thing because without new digital security measures, our society will be extremely vuln…
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Taking control of charge transfer: strategic design for solar cells
Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda
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Chemokine signaling mechanisms underlying inflammation and infection control: insights from the zebrafish model
This thesis focuses on the role of chemokine receptors CXCR3 and CCR2 in the inflammatory process and infection control using the zebrafish model.
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Attitude Switch: unraveling breast cancer cell-intrinsic mechanisms that manipulate the immune system
PhD defence
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Magnetic imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.
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Theorie van fermion-pariteit-omkeringen in supergeleiders
Majorana meets a mermaid
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Plasmonic enhancement of one-photon- and two-photon-excited single-molecule fluorescence by single gold nanorods
This thesis is a collection of experimental attempts to enhance photoluminescence of fluorescent molecules and quantum dots with single gold nanorods (GNRs) and relevant applications.
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New spinoff company to solve major roadblock in the quantum revolution
Physicist Kaveh Lahabi’s research on quantum materials led to the launch of a new company: QuantaMap. With his colleagues, he developed a sensor that will improve the production of quantum computer chips. ‘It turns out that what I need for my fundamental physics research is also very useful for the…