305 search results for “optical tweezers” in the Public website
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Where photons meet phonons
We investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.
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Histone-DNA assemblies in archaea. Shaping the genome on the edge of life
All life on earth contains DNA, which is used to store biological information. Organisms compact their DNA in order for it to fit inside their cell(s).
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A computational study of structural and excitonic properties of chlorosomes
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…
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Photothermal studies of single molecules and gold nanoparticles: vapor nanobubbles and conjugated polymers
Promotor: M.A.G.J. Orrit
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Why Leiden University?
The Physics and Quantum Matter and Optics specialisation is one of the two programmes Leiden offers in experimental physics. The programme can be tailored to individual needs and interests.
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Master's application and admission
Find out how to apply for Research in Physics, Quantum Matter and Optics at Leiden University by following our step-by-step guide.
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A radio view of dust-obscured star formation
Within the field of astronomy, understanding how galaxies grow and evolve from the Big Bang to the present day is a challenging and complex question.
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Suppressing a Sea of Starlight: Enabling technology for the direct imaging of exoplanets
Promotor: Christoph U. Keller, Co-promotores: Matthew A. Kenworthy, Frans Snik
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Career prospects
The Research in Physics, Quantum Matter and Optics specialisation is an excellent stepping stone for pursuing a PhD degree.
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Contact
Do you have any questions about the master’s specialisation programme Research in Physics, Quantum Matter and Optics? Please contact us.
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FameLab: young scientists take the stage
In FameLab contestants explain their research to the public in a three-minute presentation – without using PowerPoint or other presentation tools. The Leiden heats of this international communications competition will be held on 7 March. Anyone is welcome to come and watch!
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Tom van der Reep
Science
reep@physics.leidenuniv.nl | +31 000 5896
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Centre for Interdisciplinary Genome Research
The CIGR brings together a diverse range of unique expertise in genome research rooted in biology, chemistry and physics. Members of the CIGR investigate genome folding and genome transactions. An important aspect is direct as well as long term relevance for medicine.
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Quantum dots in microcavities: From single spins to engineered quantum states of light
A single self-assembled semiconductor quantum dot in a high-finesse optical microcavity - the subject of this thesis - is an interesting quantum-mechanical system for future quantum applications. For instance, this system allows trapping of an extra electron and thus can serve as a spin quantum memory,…
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Michel Orrit wins Physica Prize 2016
Michel Orrit was awarded the Physica prize 2016 for his groundbreaking work on single molecule spectroscopy.
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Quantum Emitters
We study the dynamics of individual emitters in micro cavities.
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Experimental optical imaging during pancreatic cancer interventions
PhD defence
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Laboratory studies of Water Ice in Space
Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.
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Bernhard Brandl
Science
brandl@strw.leidenuniv.nl | +31 71 527 5830
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DNA folded in compliant helix
In an Advance Online Publication biophysicist John van Noort and others show using magnetic tweezers that DNA is folded in compliant helices of chromatin. This allows enzymes access to the DNA needed for gene expression. Van Noort's research group made the discovery in close partnership with researchers…
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Stellar radio beacons for Galactic astrometry
A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.
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High-resolution integral-field spectroscopy of exoplanets
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.
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Photon detection at subwavelength scales
Promotor: E.R. Eliel, Co-Promotor: M.J.A. de Dood
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Plasmonic enhancement of single-molecule fluorescence under one- and two-photon excitation
This thesis aims to improve the detection from ultra-weak single emitter by enhancing their emission properties with plasmonic nanostructures. We exploit the wet-chemically synthesized single crystalline gold nanorods (GNRs) as our basic frameworks in the whole studies, simply because of their unique…
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Faint Quasars at Very Low Frequencies
In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?
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Programme structure
The programme guarantees a thorough experience on the frontline of physics research with a practical training of communicative and computer skills.
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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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About the programme
The specialisation consists of 120 European Credit Transfer System (EC) points and includes mandatory courses and electives (60 EC) and two research projects (60 EC).
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Van Marum Colloquium: Imaging Electrochemical Reactions by Operando Optical Microscopy
Lecture
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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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Amin Moradi
Science
moradi@physics.leidenuniv.nl | +31 71 527 5676
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Thinking about the quantum internet
Quantum computers deserve their own quantum internet. This is a network that dispatches information not in the form of bits - ones and zeros - but rather as qubits, just like in the quantum computer itself. In the view of Dirk Bouwmeester, a professor in Leiden’s Quantum Matter & Optics research group,…
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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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It's just a phase: High-contrast imaging with patterned liquid-crystal phase plates to facilitate characterization of exoplanets
This thesis aims to demonstrate how the achromatic nature and design flexibility of liquid-crystal optics can be used to improve high-contrast imaging instruments to facilitate detailed exoplanet characterization.
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Focal-plane wavefront sensors for direct exoplanet imaging: Theory, simulations and on-sky demonstrations
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…
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Surface Plasmons Measured for Faster Internet
Leiden physicists use a new method to measure so-called surface plasmons. Researching these particles could lead to new light-based technology, including faster internet.
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Joan van der Waals colloquium
The Joan van der Waals colloquium is an ongoing bi-weekly lecture series.
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About the programme
The MSc programme Physics offers 5 research-oriented specialisations where you can focus on Theoretical Physics, Quantum Matter and Optics, Biological and Soft Matter, or Cosmology. You can also combine Physics with education, management or science communication.
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Education
The Leiden Institute of Physics (LION) offers bachelor and master level education in physics at Leiden University.
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SALTSWAT Project
SALTSWAT -- a project which combines the Spaces for Active Learning & Teaching and the Support wtih Active Teaching -- began in Mid-2019 and is running in pilot until the summer of 2020. The purpose of the project is to find answers to the question of how to systematically accelerate 'active teaching…
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Star formation and aging at cosmic noon: the spectral evolution of galaxies from z=2
Promotores: Prof.dr. M. Franx & Prof.dr. P.G. van Dokkum (Yale University)
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On quantum transport in flat-band materials
The studies in this thesis are focused on the physical effects in the flat band materials. The results contain the discovery of strong enhancement of RKKY spin-spin interactions with specific geometric arrangement and dynamical generation of excitonic order parameter with high magnitude.
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A well-established harmony in chaos: from isolated galaxies to galaxy clusters
The origin and evolution of galaxies are closely linked to many different physical phenomena.
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Working at the Faculty of Science
Working for a top faculty? Discover the vacancies at the Faculty of Science and apply immediately.
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Louise Jawerth Lab
Research in the Jawerth lab focuses on using principles from soft condensed matter physics to understand important biological materials.
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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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The quantum computer
The worldwide race to the quantum computer is in full swing. This computer can take on computing tasks that we can only dream of today, such as finding proteins that can be used as medicines in seconds flat. Leiden physicists have discovered how the Majorana particle can be used as a building block…
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Folded DNA unravelled
Leiden physicist Maarten Kruithof has discovered how our DNA is infallibly able to fold itself and to unfold again. In his dissertation he demonstrates how DNA is folded in a single long, very flexible spiral.
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PhD position: ultrafast broadband-THz spectroscopy of perovskite materials
Science, Leiden Institute of Chemistry (LIC)
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A new window on the Universe
Rottgering