Electrical Control of molecular Spins successfully demonstrated
New Approach opens up new Possibilities for the precise electrical Control of electron Spins – Quantum Technologies are considered a key enabling technology for more powerful computers, secure communication, and highly sensitive sensors. Individual magnetic molecules are promising building blocks for applications in spintronics, Quantum Computing, and Quantum Sensing. Owing to their nanoscale dimensions, they […]
Paving the Way for Volume Manufacturing of Quantum Chips
Precisely positioned Quantum Dots enable scalable and reproducible Integration of Quantum Light Sources on Semiconductor Chips – Photonic Quantum Chips are considered a key technology for future communication and computing applications. One of the major challenges in their fabrication has been that the required Quantum Light Sources – so-called Semiconductor Quantum Dots – form at […]
Observation of the Recurrence of Rabi Oscillations in Semiconductor Quantum Dots demonstrated
Experiment confirms, for the first time, the theoretically predicted Recurrence of Rabi Oscillations in Semiconductor Quantum Dots – Researchers from the QR.N consortium at the Paderborn site have successfully demonstrated the experimental observation of the so-called recurrence of Rabi oscillations in Semiconductor Quantum Dots. The phenomenon was already predicted in theoretical models in 2007 but […]
Efficient Source for polarization-entangled Photons in the Telecom C-Band
Quantum Dot Source generates triggered polarization-entangled Photon Pairs with high Coincidence Rates, Fidelities, and Single-Photon Purity – Many concepts for future Quantum Networks rely on the distribution of entangled qubits between spatially separated nodes. Photons are particularly well suited as information carriers, as they can transmit over long distances at the speed of light. Photonic […]
New Paper on Multiparty Entanglement published
Experiment combines Multiparty Entanglement with event-ready Monte Carlo Simulations – In recent years, Quantum Networks have become a central research field in Quantum Communication. They enable, for example, the interconnection of future Quantum Computers and, in the long term, the so-called Quantum Internet. However, the technological challenges in realizing such networks are enormous. Among other […]
New Paper on Quantum Nonlocality in Triangle Networks
Experiment enables Exploration of complex Quantum Networks – Bell’s theorem, for which Alain Aspect, John F. Clauser, and Anton Zeilinger received the 2022 Nobel Prize in Physics, states that entangled particles remain connected even when separated by large distances. This phenomenon, known as Quantum Nonlocality, has for decades been regarded as a key demonstration that […]
New Article on Quantum Dot Devices
Review highlights Advances in epitaxial Growth, Telecom-Band Quantum Dots, and Nanophotonic Integration – Quantum Light Sources are a central building block of photonic Quantum Technologies that enable secure communication, Quantum Networks, quantum-enhanced sensing, distributed Quantum Computing, and Quantum Metrology. An ideal source should emit single photons on demand with high efficiency, high indistinguishability, and minimal […]
Tin-Vacancy Centers with high Application Potential as coherent Spin-Photon Interfaces
Demonstration of a coherent Spin-Photon System with promising Properties for Quantum Network Nodes – Group-IV color centers are defects in the lattice structure of diamond that exhibit stable optical and addressable electron-spin transitions. Control over the surrounding nuclear spins is particularly important, as their long coherence times make them robust Quantum Memories for Quantum Information […]
Topological Effects transferred to Light-Matter Systems for the first Time
Successful Implementation of Quantum Hall and Spin Hall Effects in a hybrid Light-Matter System – Researchers from the Cluster of Excellence ctd.qmat in Würzburg and Dresden have, for the first time, succeeded in transferring key topological effects of solid-state physics to a hybrid light-matter system. The work also involved Prof. Dr. Sven Höfling from the […]
Visual Monitoring of Nuclear Spins in Molecules opens up new Possibilities for Quantum Technologies
Research Team demonstrates full Optical Control of Nuclear Spins in a Molecular System – Nuclear Magnetic Resonance (NMR) is an established method for investigating materials and molecules, ranging from chemical analysis to Quantum Information Processing. Due to their weak interaction with the environment, nuclear spins are considered particularly stable carriers of Quantum Information. Researchers from […]
