614 search results for “quantum mechanismen” in the Public website
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Raindrops on the roof-technique reveals new quantum liquid
Koen Bastiaans and his colleagues discovered a new quantum liquid unlike anything ever seen. They did it by using a technique that can be compared to listening to the sound of raindrops falling on a roof. Publication in Science 29 October.
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Quantum particles and bacteria without cell walls: KLEIN grant for Beenakker and Claessen
Are Weyl particles the ideal conductors? Do cells without a cell wall play a role in chronic Tuberculosis infections? Carlo Beenakker and Dennis Claessen want to answer these questions. They both received a KLEIN grant from the NWO. With these grants, NWO wants to stimulate innovative, fundamental r…
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Towards efficient low-temperature CO2 electrolysis
In what way can the chemical properties of cobalt porphyrines be adjusted to optimize their selectivity and activity when using them for the electrochemical conversion of CO2 to methane and methanol?
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The physics of nanowire superconducting single-photon detectors
Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)
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City Deal Kennis Maken: Leren met de Stad Leiden
Hoe kan de City Deal Kennis Maken bijdragen aan het formuleren van maatschappelijk relevant onderzoek dat de stad in al haar diversiteit centraal stelt? In de stad Leiden zijn burgers momenteel maar in beperkte mate betrokken bij het bepalen van de agenda van de lokale City Deal Kennis Maken. Dit onderzoeksproject…
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Dutch and Japanese researchers collaborate with leading quantum software developer Qu&Co
Vedran Dunjko (LIACS and applied Quantum algorithms (aQa) Leiden) and Tomoyuki Morimae (Kyoto University) are to collaborate with Qu&Co. Qu&Co is a leading European developer of quantum software.
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Smoothly breaking unitarity : studying spontaneous collapse using two entangled, tuneable, coherent amplifiers
The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.
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On the coexistence of Landau levels and superconductivity
In unconventional high temperature superconductors, supercurrent vortices are known to spoil the Landau levels. In this thesis the emergence of Landau levels is studied in different types of superconductors: Weyl superconductors, and the Fu-Kane heterostructure.
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Beyond Photon Pairs
Promotor: Prof.dr. E. R. Eliel, Co-Promotor: M.J.A. de Dood
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New perspective in quantum mechanics and better sleep for PhD students
Besides physics, the sleep of PhD students also benefits from Vitaly Fedoseev's PhD research. He will receive his doctorate on July 7 for his work on optomechanics within quantum mechanics. And also on a setup that eliminated the need for PhD students to push a button every hour for 72 hours.
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Let's Play Quantum Games
Lecture
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Quantum Meets Leiden: IBM lecture & mini-symposium
Conference
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Richard Gill member of FQXi
Prof. Dr. Richard Gill has recently joined as a member of the Foundational Questions Institute (FQXi). FQXi is an international association of scientists who explore the foundations of physics and cosmology.
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5 years Quantum Rules lab: ‘The best part is when you hear the penny drop with a student’
Quantum Rules lab van Leiden Universiteit biedt proefjes en experimenten voor middelbare scholieren om te leren over kwantum natuurkunde. Henk Buisman vertelt over het 5 jarige jubileum.
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Molecular electronics: Controlled manipulation, noise and graphene architecture
Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.
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Theoretical Physics
In the spirit of 'unity in diversity', our objective is to promote insight into and appreciation for the wonder that the same physical laws and mathematical concepts apply to the whole of nature, from the largest to the smallest energy and length scales. We strive for the application of abstract theoretical…
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New method to find Majorana’s tested for the first time
Jianfeng Ge and Milan Allen of Leiden University look for majorana quasiparticles using shot noise measurements
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Tom van der Reep
Science
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Measuring the pull of gravity on a micron-sized particle
Tjerk Oosterkamp of the Leiden Institute of Physics managed to do the first-ever measurement of gravity on a tiny particle - just 0.43 milligrams - where the quantum regime starts. He explains in Physics World why this is so challenging.
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Bachelor's research on ultra-thin nanochip nominated for Young Talent Award
Using 2D materials, physics student Romme van der Kemp developed a nanochip that is extremely small ánd scalable. This is needed to make all kinds of technologies better, faster and smaller. He has been nominated for the FWN Young Talent Award 2023 for his research.
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Low-temperature spectroscopic studies of single molecules in 3-D and on 2-D hosts
Spectroscopic studies on fluorescent single molecules in organic condensed matter does not only provide information about the molecule itself, but also its near environment. By suppression of phonon-induced broadening of spectral lines through cooling to low temperatures, small changes in the spectral…
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Light manipulated with large artificial atom
Physicists have manipulated light with large artificial atoms, so-called quantum dots. Before, this has only been done so well with actual atoms. It is an important step towards light-based quantum technology. Publication on August 30th in Nature Communications.
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Physicists demonstrate new method to make single photons
Scientists need individual photons for quantum cryptography and quantum computers. Leiden physicists have now experimentally demonstrated a new production method. Publication in Physical Review Letters on July 23rd.
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ERC Advanced Grant for Carlo Beenakker to ‘braid’ Majorana fermions
Theoretical physicist Carlo Beenakker has been awarded a €2m Advanced Grant by the European Research Council (ERC). He will use this to try to create the ideal building blocks for a quantum computer: ‘braided’ Majorana fermions. An ambitious project that may just lead to a major breakthrough.
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Léo Ducas appointed professor of Mathematical Cryptology
In cryptography, the sky is the limit according to the new professor Mathematical Cryptology Léo Ducas. He already designed several cryptosystems as part of his research at the Centrum Wiskunde & Informatica (CWI), some of which might soon be adopted as new international standards. Since December,…
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Uniform infinite and Gibbs causal triangulations
Promotor: Richard D. Gill
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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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FOM Grant for Theoretical Model Majorana Gun
Professor Carlo Beenakker has been awarded a FOM Projectruimte subsidy to build a theoretical model of a majorana gun, a very promising instrument for quantum computers.
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Cryptanalysis research of prof. Ronald Cramer in WIRED
The American magazine WIRED recently published an article on ‘quantum-safe public key encryption’.
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This is how physicists use light to build complex structures
Petr Steindl works on quantum dots in microcavities for his PhD research. He manipulates single-photons to create complex structures of light. Applications could include quantum communication and gates for quantum computers.
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Photosynthetic light reactions at the gold interface
Promotor: Prof.dr. T.J. Aartsma, Co-promotor: R.N. Frese
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Optimization of quantum algorithms for near-term quantum computers
PhD defence
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Lieuwe Vinkhuijzen third in VERSEN Master Thesis Award
PhD candidate Lieuwe Vinkhuijzen received the VERSEN Master Thesis Award 3rd prize for his master’s thesis on quantum computing. ‘A forward-looking thesis that solves problems in software engineering; not in the next decade, but beyond’, according to the jury.
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Students are programming with qubits
Students of the Leiden University master Computer Science are the first students in the world that have been educated in programming with a quantum computer. ‘With this system, it is finally possible to solve complex real-life problems of society.‘
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How cool is LEGO®? Leiden physicists use it for ice cold research
Tjerk Oosterkamp's group is conducting what is perhaps the coldest research in the world. The researchers have cooled a sensor to below 2 millikelvin - almost as cold as absolute zero. This allows them to make extremely sensitive measurements. PhD candidate Jaimy Plugge helped build the setup: ‘We are…
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Bernard van Heck Wins Christiaan Huygens Prize 2016
Bernard van Heck has won the Christiaan Huygens Prize 2016 for his Leiden PhD research on electrical circuits for quantum computers. On behalf of the KNAW, the Dutch minister of Education, Culture and Science awards this prize annually to a researcher who has made an innovative contribution to scien…
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Deciphering fermionic matter: from holography to field theory
Promotor: K.E. Schalm, Co-promotor: S.S. Lee
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Quantum machine learning
PhD defence
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NWO Projectruimte for physicists Schalm and Zaanen
NWO has awarded a €392k Projectruimte grant to physicists Koenraad Schalm and Jan Zaanen to study ‘strange metals’. These materials are alleged to follow the bizarre laws of quantum mechanics even at everyday length scales.
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Today’s experimental quantum research at Leiden University: from the microscopic to the macroscopic
Lecture, Studium Generale
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Frontiers of Modern Physics
This is the physics summer school of Leiden University. It is part of the Leiden Institute of Physics (LION). The summer school is intended for Bachelor (BSc) students in physics. It covers topics from quantum matter and optics, to biological & soft matter physics and cosmology and theoretical physics.…
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Optical cavities and quantum emitters
PhD defence
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Prior Research
The van Exter group has an extensive history of prior research in classical and quantum optics. As former part of the group of Han Woerdman, we have studied topics as diverse as:
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Perfect for designing new molecules
Even a small quantum computer should be able to simulate exactly the properties and behaviour of new molecules. This would take chemistry to an entirely new level. Better solar panels, more powerful batteries, saving lots of energy in the chemical industry: the applications have the potential to transform…
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Theory
Many important topics in computer science, such as the correctness of software, the efficiency of algorithms and the modeling of complicated systems, depend on sound theoretical underpinnings. In the Theory group, we study these fundamental building blocks and develop verification methods to prove system…
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Quantum & Society Research Colloquium Series: 'Quantum for High-School Students and Teachers'
Lecture
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Quantum dots in microcavities: From single spins to engineered quantum states of light
PhD defence
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An artificial atom as qubit
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…
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Frontiers of Nanoscience (NanoFront)
Can we make quantum devices from quantum surprises? And can we explore and build life from the nanoscale up?
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Huub de Groot
Science