News & Events


New publication submitted: Interferometric scattering microscopy reveals microsecond nanoscopic protein motion on a live cell membrane

Much of the biological functions of a cell are dictated by the intricate motion of proteins within its membrane over a spatial range of nanometers to tens of micrometers and time intervals of microseconds to minutes. While this...[more]


William Hamlyn wins poster prize at ICAP 2018

Congratulations! At ICAP 2018 William Hamlyn won the Nature Physics Reviews prize for his poster entitled "Atom-light interactions in thermal Rubidium vapours confined to a volume less than λ3". Download...[more]


New publication in Nano Letters: High-Speed Microscopy of Diffusion in Pore-Spanning Lipid Membranes

Pore-spanning membranes (PSMs) provide a highly attractive model system for investigating fundamental processes in lipid bilayers. We measure and compare lipid diffusion in the supported and suspended regions of PSMs prepared on...[more]


New book "Quantum Optics and Nanophotonics" now available

In 2013, a summer school on Quantum Optics and Nanophotonics was held at Les Houches, France. The book covering many of the lectures is now available! (Image copyright by Oxford University Press Scholarship Online 2017) Take a...[more]


Mahdi Mazaheri wins poster prize at DPG spring meeting 2018 in Berlin

Congratulations! During the 2018 DPG spring meeting in Berlin, Mahdi Mazaheri won the EPL poster award of the DPG biological physics division. The title of the poster is: "High-speed imaging of rotational diffusion of a gold...[more]


New publication in Nano Letters: Visualizing single-cell secretion dynamics with single protein sensitivity

Cellular secretion of proteins into the extracellular environment is an essential mediator of critical biological mechanisms, including cell-to-cell communication, immunological response, targeted delivery, and differentiation....[more]


New publication on ACSPhotonics: Manipulation of quenching in nanoantenna-emitter systems enabled by external detuned cavities: a path to enhance strong-coupling

Strong light-matter interactions at the single emitter-level have been so far achieved via narrowband cavities with very high quality factors (Q) or via plasmonic nanoantennas at the cost of significant radiation quenching in the...[more]


New publication in Nano Letters: Chip-Based All-Optical Control of Single Molecules Coherently Coupled to a Nanoguide

Nanoscopic sources of photons, switches, and memories are in high demand as building blocks for quantum optical networks. Equally important are solutions for efficient “wiring” of these elements. An attractive approach to address...[more]


Dominik Rattenbacher wins poster prize at 651. WE-Hereaus-Seminar on Longrange Interactions, Physikzentrum Bad Honnef, 25th-27th October 2017

Congratulations! Dominik Rattenbacher wins poster prize at 651. WE-Hereaus-Seminar on Longrange Interactions, Physikzentrum Bad Honnef, 25th-27th October 2017 with his poster "On Chip Quantum Optics in 1D: Single Molecules...[more]


William Hamlyn wins Poster prize at QuICC Summer School 2017

Congratulations! William Hamlyn, University of Durham, wins 1st Place Poster prize  for his poster on "Atom-light interactions in thermal Rubidium vapours confined to a volume less than λ3". The prize was...[more]


Andreas Maser wins SAOT student award in Optical Materials and Systems

Congratulations! Andreas Maser wins SAOT student award in the field of Optical Materials and Systems (2017) for the article "Few-photon coherent nonlinear optics with a single molecule". Few-photon coherent...[more]


Siegfried Weisenburger wins young researcher award of Deutsche Gesellschaft für angewandte Optik

Congratulations! Siegfried Weisenburger wins young reseacher award for an outstanding PhD. thesis of Deutsche Gesellschaft für angewandte Optik (DGaO) with his PhD. thesis on Cryogenic Super-Resolution Fluorescence...[more]


Coherent coupling of a single molecule to a scanning Fabry-Perot microcavity

Physicists in many research areas aim to realize efficient devices that can generate intricate quantum states and perform complex operations. Considering that photons are ideal carriers of quantum information while material...[more]


Biexciton emission strongly enhanced by plasmonic nano-cone

Semiconductor quantum dots (Q-dots) are desirable in many applications because they can emit multiple photons for each excitation pulse via the generation of multiple excitons. In practice, however, multi excitonic emissions are...[more]


A single molecule as a high-fidelity photon-gun for producing intensity-squeezed light

Generation of light with intensity fluctuations below the shot-noise limit has been one of the most important challenges in quantum optics. An elegant approach was proposed in the 1980s: through excitation of a two-level atom, a...[more]


Cryogenic optical localization provides 3D protein structure data with Angstrom resolution

Starting with efforts in scanning nearfield optical microscopy in the 1980s, many laboratories around the world have contributed to pushing the resolution of optical imaging beyond the Abbe limit [1]. A particularly fruitful...[more]


Nonlinear optics with a single molecule and only a few photons

Photons do not usually interact. This is why in linear optics two laser beams can cross without clashing like two swords. In nonlinear optical materials, however, photons can interact with one another, opening the...[more]


Navid Bonakdar's new paper "Mechanical Plasticity of Cells"

Mechanical Plasticity of Cells, Navid Bonakdar, Richard Gerum, Michael Kuhn, Marina Spörrer, Anna Lippert, Werner Schneider, Katerina E. Aifantis & Ben Fabry,  in: Nature Materials 15, 1090 (2016).[more]


Nature Photonics Cover Page:
Few-photon coherent nonlinear optics with a single molecule

Few-photon coherent nonlinear optics with a single molecule, A. Maser, B. Gmeiner, T. Utikal, S. Götzinger, and V. Sandoghdar, Nature Photonics 10, 450 (2016).[more]


Emanuel Eichhammer participated in the 66th Lindau Nobel Laureate Meeting

402 young scientists from 80 countries will participate in the 66th Lindau Nobel Laureate Meeting. They are outstanding students, graduate students and post-docs under 35 years of age, conducting research in the field of physics....[more]


Pierre Türschmann wins poster prize at PPNEC

Pierre Türschmann wins the first prize for his poster on "Molecules Coupled to Dielectric Waveguides: On-Chip Platform for Many-Body-Physics" at Europhysics Conference "From Photonics to Polaritonics -...[more]


Nanostructures and quantum emitters together make light more precise

Optical fibre sensors make use of diverse physical effects to measure parameters such as strain, temperature and electric field. We have recently introduced a new class of reconfigurable fibre sensor, based on a ‘flying-particle’...[more]


When every photon counts

Single-photon sources are desirable resources for a variety of applications, ranging from quantum information processing to metrology.  A single emitter, like a single atom or a quantum dot can, in principle, be used as the...[more]


A cantilever-based sub-λ3 mode-volume optical microcavity

Microcavities have been popular for a number of applications, ranging from micorlasers, cavity quantum electrodynamics studies and sensing. The enhanced coupling in the cavity is usually achieved via a high quality factor. This,...[more]


Prof. Vahid Sandoghdar elected as fellow of the Optical Society (OSA)

He was made an OSA Fellow for his pioneering work in the field of nano-quantum-optics through the elegant combination of concepts from quantum optics, single-molecule spectroscopy, scanning probe microscopy and plasmonics.

17.09.2014 about "The shadow of a disease"

Proteins such as tumour markers can be easily and sensitively detected by their scattered light


Vahid Sandoghdar wins poster prize at NFO-13

Vahid Sandoghdar wins poster prize at NFO-13, this year's international conference on near-field optics and nanophotonics in Salt Lake City, Utah. He presented our work on scanning-pipette electrostatic trap of nanoparticles.


Marek Piliarik wins poster prize at Workshop "Biosensing"

Marek Piliarik’s work on Label-free sensing of proteins (arXiv: 1310.7460v1) wins the best poster prize at the International workshop Taking Detection to the Limit: Biosensing with Optical Microcavities. Click here to see...[more]


Guest editors Chem. Soc. Rev.

Michel Orrit, Taekjip Ha and Vahid Sandoghdar,Guest Editors for a special issue on Single-molecule Optical Spectroscopy Chem. Soc. Rev. [more]