Scientists at Leibniz University Hannover have developed a cost-effective quantum network security system using frequency-bin coding of light particles, which reduces complexity and equipment costs by 75% while enhancing security against quantum computer threats through a simplified single-detector design that enables dynamic, scalable quantum key distribution.
Recent research at Johannes Gutenberg University Mainz has demonstrated that chiral molecules placed on gold surfaces can effectively control electron spin direction based on their handedness (left or right), offering a promising alternative to traditional magnetic methods for developing more efficient electronic devices.
Scientists have made a transformative discovery in quantum computing that challenges long-held assumptions about spin qubit assembly. The breakthrough research demonstrates that hydrogen bonds can effectively facilitate spin interactions between qubit components.
In a groundbreaking development published in Nature Communications, an international research team has created the first electrically pumped continuous-wave semiconductor laser compatible with silicon integration. The device, constructed from group IV elements using stacked layers of silicon-germanium-tin and germanium-tin, operates with minimal power requirements comparable to an LED.
In a new study, researchers from the Max Planck Institute of Quantum Optics under the lead of Timon Hilker demonstrated evidence of stripe formation, i.e. extended structures in the density pattern, in a cold-atom Fermi-Hubbard […]
Christian Schneider, a quantum physicist at the University of Oldenburg in Germany, has been awarded a prestigious European Research Council (ERC) Consolidator Grant of approximately two million euros for his groundbreaking research into two-dimensional materials […]
Researchers from Martin Luther University Halle-Wittenberg (MLU) and the Max Planck Institute of Microstructure Physics in Halle have developed a groundbreaking method to analyze magnetic nanostructures with exceptional precision. This technique achieves a resolution of […]
Scientists at the Max Planck Institute for the Science of Light (MPL) have developed a groundbreaking method for quantum entanglement that pairs photons with acoustic phonons through Brillouin scattering, marking a significant advance in quantum […]
The rare-earth element erbium could play a key role in future quantum networks: Researchers from the Max Planck Institute of Quantum Optics (MPQ) and the Technical University of Munich (TUM), led by Andreas Reiserer, have […]
A team of researchers from the Munich Quantum Valley, led by the Max Planck Institute of Quantum Optics in collaboration with the quantum computing start-up planqc, has succeeded in running a register of 1200 atoms continuously for over an hour.
Theorists at the Max Planck Institute of Quantum Optics have made a significant stride in the field of quantum computing. Their research addresses a long-standing question: can quantum computers really outperform classical computers in solving […]
Flux attachment provides a powerful conceptual framework for understanding certain forms of topological order, including most notably the fractional quantum Hall effect. Despite its ubiquitous use as a theoretical tool, directly realizing flux attachment in […]
Systems consisting of many small particles can be highly complex and chaotic – and yet some can still be described using simple theories. However, whether this also extends to the world of quantum physics has […]
The Quantum Talents Symposium Munich is a joint initiative of the Max Planck Institute of Quantum Optics (MPQ), the Munich Center for Quantum Science and Technology (MCQST), the International Max Planck Research School for Quantum […]
The LMU Center for NanoScience and four LMU spin-off companies present the Nano Innovation Award for particularly innovative doctoral theses. Andreas Gritsch, who completed his doctorate in the Otto Hahn Group Quantum Networks at MPQ, […]
Researchers have studied nonequilibrium quantum dynamics of spin chains by employing principal component analysis (PCA) on data sets of wave function snapshots and examined how information propagates within these data sets. The quantities they have […]
Heat and computers do not mix well. If computers overheat, they do not work well or may even crash. But what about the quantum computers of the future? These high-performance devices are even more sensitive to heat. This is because their basic computational units — quantum bits or “qubits” — are based on highly-sensitive units, some of them individual atoms, and heat can be a crucial interference factor.
In a laboratory experiment, researchers have succeeded in realizing an effective spacetime that can be manipulated. In their research on ultracold quantum gases, they were able to simulate an entire family of curved universes to investigate different cosmological scenarios and compare them with the predictions of a quantum field theoretical model.
Water that simply will not freeze, no matter how cold it gets — a research group has discovered a quantum state that could be described in this way. Experts have managed to cool a special material to near absolute zero temperature. They found that a central property of atoms — their alignment — did not ‘freeze’, as usual, but remained in a ‘liquid’ state. The new quantum material could serve as a model system to develop novel, highly sensitive quantum sensors.
Quantum computers promise significantly shorter computing times for complex problems. But there are still only a few quantum computers worldwide with a limited number of so-called qubits. However, quantum computer algorithms can already run on conventional servers that simulate a quantum computer. A team has succeeded in calculating the electron orbitals and their dynamic development using an example of a small molecule after a laser pulse excitation.
Scientists have presented a contraction strategy that makes use of the exact light cone structure of the tensor network representing the observables.
Ultrashort infrared light pulses are the key to a wide range of technological applications. The oscillating infrared light field can excite molecules in a sample to vibrate at specific frequencies, or drive ultrafast electric currents […]
In a special arrangement of atomic spins, Max Planck physicists have measured the properties of the so-called Haldane phase in an experiment. To do so, they used a quantum mechanical trick. In some materials, there […]
Researchers at the Max Planck Institute of Quantum Optics succeeded in massively improving the performance of a component that is crucial to optical quantum systems. Future quantum computers are expected not only to solve particularly […]
A team of scientists at CERN led by MPQ physicist Masaki Hori has found that a hybrid antimatter-matter atom behaves in an unexpected way when submerged in superfluid helium. The result may open a new […]