Although systems consisting of many interacting small particles can be highly complex and chaotic, some can nonetheless be described using simple theories. Does this also pertain to the world of quantum physics? A research team led by Professor Monika Aidelsburger and Professor Immanuel Bloch from the LMU Faculty of Physics investigated this question concerning quantum many-body systems and found indications that they can be described macroscopically through simple diffusion equations with random noise. The study was recently published in the journal Nature Physics.

Together with 24 German research institutions and companies under the coordination of Forschungszentrum (FZ) Jülich, Fraunhofer IPMS is working on an integrated German quantum computer based on superconducting quantum chips and with improved error rates. Halfway through the project, the first demonstrator can now be put into operation.

A method developed at the University of Bonn could have potential applications for tap-proof communication.

In a study titled „Near-complete chiral selection in rotational quantum states" published in Nature Communications, the Controlled Molecules Group from the Molecular Physics Department of the Fritz Haber Institute has made a significant leap forward in the field of chiral molecules. The team, led by Dr. Sandra Eibenberger-Arias, achieved near-complete separation in quantum states for these essential components of life.

Researchers at the Max Planck Institute for Nuclear Physics in Heidelberg have succeeded in selectively manipulating the motion of the electron pair in the hydrogen molecule. The emission direction of a photoelectron released by light (a photon) relative to the remaining bound electron in the cleaved neutral hydrogen atom can be controlled by the time interval between two laser flashes on the scale of a few hundred attoseconds (10–18 s). The adjustable emission asymmetry is based on the quantum entanglement between the bound electron and the spatially separated emitted electron.

In a recent paper published in Physical Review Letters, researchers of the Munich Center for Quantum Science and Technology (MCQST) - in collaboration with researchers from Regensburg, Heidelberg and Harvard University - propose a new scheme to emulate doped, bosonic quantum magnets in state-of-the-art cold atom and molecule experiments. Instead of relying on physical tunneling of the mobile dopants, they develop a protocol that utilizes the rich internal structure of atoms and molecules to implement the charge and spin degrees-of-freedom.

Four researchers from the Institute of Photonics at Leibniz University Hannover have developed a new transmitter-receiver concept for transmitting entangled photons over an optical fiber. This breakthrough could enable the next generation of telecommunications technology, the quantum Internet, to be routed via optical fibers. The quantum Internet promises eavesdropping-proof encryption methods that even future quantum computers cannot decrypt, ensuring the security of critical infrastructure.

HQS Quantum Simulations, a leading provider of quantum simulation software, is pleased to announce the release of HQS Tasks: an innovative software module of the HQStage toolkit for exploiting large amounts of computational resources with minimal effort.

Kipu Quantum, a German quantum software company specializing in application- and hardware-specific quantum solutions, explores the potential of its novel quantum algorithms for BASF’s logistics optimization. Utilizing a novel digital compression method, Kipu accelerates the search for optimal solutions by harnessing quantum dynamics and encoding them into digital quantum computers.

The main goal of ARCTIC (Advanced Research on Cryogenic Technologies for Innovative Computing) is to develop scalable cryogenic ICT microsystems and control technology for quantum processors. The technologies developed will have applications in many fields from sensing to communication, leading to important cross-fertilization that will strengthen the forming European ecosystem on cryogenic classical and quantum microsystems.