Speaker: Prof. Dr. Lukáš Nádvorník, Charles University, Prague
Title: Terahertz spin-wave pulses of antiferromagnetic hematite
Time: Friday, 03 July 2026, 11:15 h
Speaker: Francesca D’Esposito, CNRS, Grenoble, France
Title: Study of high-Qi tantalum resonators for superconducting qubits implementation
Time: Friday, 26 June 2026, 11:15 h
Speaker: Max Hays, MIT, Massachusetts, Cambride, USA
Title: Superconducting Circuits for Noise-Resilient Qubits
Time: Friday, 12 June 2026, 11:15 h
WMI researchers succeeded in demonstrating quantum teleportation of microwave states through noisy superconducting channels. This experiment emphasizes the fundamental importance of the fluctuation-dissipation theorem for the transmission of quantum correlations and enables scalable microwave quantum networks beyond the constraints of millikelvin temperatures. The particular demonstration relies on a 6.6-meter-long cryolink system connecting two superconducting quantum nodes. Quantum communication via this cryolink operates at microwave frequencies around 5 GHz over superconducting coaxial cables with temperatures up to 4 K.
The article has been highlighted as an Editor's Suggestion in Physical Review Letters.
Entanglement—the defining quantum correlation between distant particles—is a key resource for quantum networks, but generating it typically requires carefully engineered coherent control and low-noise conditions. Thermal noise, the random fluctuations present in any warm environment, is usually considered the enemy; it destroys quantum coherence and prevents the formation of entangled states. In a new paper recently published in the journal Quantum, researchers at WMI proposed a protocol that turns this intuition on its head. They predicted that two distant qubits, connected by a quantum channel and driven by a filtered but purely thermal noise source, gradually relax into a highly entangled state. This process happens even without any coherent driving or active control and could, therefore, open up a new and resource-efficient route for scalable quantum information processing applications.
Together with Bluefors, we attached one of our quantum processors to a Bluefors LD dilution refrigerator this week at the DPG Spring Meeting in Dresden. The chip comprises 17 superconducting Transmon qubits integrated with 24 tunable coupling elements that precisely control the interactions between qubits. To protect the quantum states from thermal noise, we cool qubits to millikelvin temperatures. At the WMI, we are using these superconducting quantum processors to explore the fundamental limits of decoherence and to develop and improve scalable architectures. Events like the DPG spring meeting are always wonderful opportunities to engage with the broader condensed-matter physics community. We are happy that we were able to show one of our quantum processors together with Bluefors this year.
