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Electrically switchable qubit (Image: University of Basel, Department of Physics)

Electrically switchable qubit can tune between storage and fast calculation modes

To perform calculations, quantum computers need qubits to act as elementary building blocks that process and store information. Now, physicists have produced a new type of qubit that can be switched from a stable idle mode to a fast calculation mode. The concept would also allow a large number of qubits to be combined into a powerful quantum computer, as researchers from the University of Basel and TU Eindhoven have reported in the journal Nature Nanotechnology.

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Publication Nature Nanotechnology

 

 

The new single-photon source is based on excitation of a quantum dot (shown as a bulge on the bottom left), which then emits photons. A micro-cavity ensures that the photons are guided into an optical fiber and emerge at its end. (Image: University of Basel, Department of Physics)

Physicists develop record-breaking source for single photons

Researchers at the University of Basel and Ruhr University Bochum have developed a source of single photons that can produce billions of these quantum particles per second. With its record-breaking efficiency, the photon source represents a new and powerful building-block for quantum technologies.

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Publication in Nature Nanotechnology

Kagome graphene is characterized by a regular lattice of hexagons and triangles. It behaves as a semiconductor and may also have unusual electrical properties. (Image: R. Pawlak, Department of Physics, University of Basel)

Kagome graphene promises exciting properties

For the first time, physicists from the University of Basel have produced a graphene compound consisting of carbon atoms and a small number of nitrogen atoms in a regular grid of hexagons and triangles. This honeycomb-structured “kagome lattice” behaves as a semiconductor and may also have unusual electrical properties. In the future, it could potentially be used in electronic sensors or quantum computers.

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Publication in Angewandte Chemie

 

In einem antiferromagnetisches Einkristall wurden Bereiche mit unterschiedlicher Ausrichtung der antiferromagnetischen Ordnung geschaffen (blaue und rote Bereiche), die durch eine Domänenwand getrennt sind. Deren Verlauf lässt sich durch die Strukturierung der Oberfläche steuern. Das ist die Grundlage für ein neues Speichermedienkonzept (Bild: Departement Physik, Universität Basel).

Concept for a new storage medium

Physicists from Switzerland, Germany and Ukraine have proposed an innovative new data storage medium. The technique is based on specific properties of antiferromagnetic materials that had previously resisted experimental examination.

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Video
Publication in Nature Physics

 

 

After synthesis, the pyrazinacenes are present in the reduced form. After a first oxidation step, they form chains. In a second oxidation, they are isolated again, but are now completely planar. (Image: Department of Physics, University of Basel)

New class of substances for redox reactions

An interdisciplinary, multinational research team presents a new class of chemical compounds that can be reversibly oxidized and reduced. The compounds known as ‘pyrazinacenes’ are simple, stable compounds that consist of a series of connected nitrogen-containing carbon rings. They are suitable for applications in electrochemistry or synthesis, as the researchers describe in the science journal Communications Chemistry.

 

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Publication in Communications Chemistry

 

Theoretical calculations were used to calculate the light intensity distribution during the splitting of water. A photoelectrode made of bismuth vanadate (BiVO4) structured with silver nanoparticles on its surface was used. The silver nanoparticles help to concentrate more light in the photoelectrode (light blue areas). They are surrounded with a silica shell to protect the silver from corrosion in water (Image: L. Driencourt, CSEM Muttenz and Swiss Nanoscience Institute, University of Basel)

On the way to sustainable hydrogen

Researchers in the SNI network have developed a theoretical method to analyze and optimize water splitting by exploiting optical effects. The work, published in the Journal of Physical Chemistry C, will help to advance sustainable hydrogen production without emitting CO2.

Publication in Journal of Physical Chemistry C

 

 

 

Sebastian Hiller, professor at the Biozentrum of the University of Basel, and his team clarified the amazing mechanism of action of the antibiotic darobactin. (Image: NFP 72, Nadine Kägi)

Novel antibiotic deceives bacteria through mimicry

Most antibiotics need to penetrate their target bacteria. But Darobactin, a newly discovered compound, is much too large to do so. Nonetheless, it kills many antibiotic-resistant pathogens – by exploiting a tiny weak spot on their surface. Researchers at the University of Basel’s Biozentrum have now revealed the amazing mechanism at play and thereby opened the door to developing completely new medicines.

 

Media release
Publication in Nature

 

 

Professor Murielle Delley. (Image: Karissa Van Tassel/zvg)

Murielle Delley has been appointed as assistant professor

The chemist Murielle Delley researches the fundamentals and mode of action of catalysts. Now the President’s Board of the University of Basel has appointed her as a new assistant professor of chemistry.

Information University of Basel