Benjamin D'Anjou
Title: “How driven superconducting qubits go boink”
Time: Friday, 18.10., 11:15 h
In their experiment, researchers at the WMI design and characterize a multimode superconducting quantum circuit that forms an artificial molecule. The circuit has two characteristic nonlinear oscillation modes. One is used as a protected qubit mode that can be efficiently decoupled from the measurement circuit to prevent the loss of quantum information. The second mode is used as a mediator that controls the interaction between the qubit mode and the measurement circuit. This protected multimode qubit has the potential to also suppress unwanted interactions between neighboring qubits, thereby solving another major challenge in scaling up quantum processors. It can thus serve as a building block for a quantum processor architecture that retains the performance of a single qubit at large scale.
As part of the "MOQS – Molecular Quantum Simulations" consortium, researchers at WMI explored the potential of quantum computing to simulate the quantum effects that govern chemical reactions. Their findings suggest that the chemical industry could be among the earliest beneficiaries of advancements in quantum computing. The report was prominently featured as the cover article in the September issue of Physics Today and is available to read online free of charge.
Quantum technology allows for unconditional security in microwave-based communication. Now, a team of researchers from the Bavarian Academy of Sciences and Humanities (BAdW), the Technical University of Munich (TUM), the University of Tokyo, and Rohde & Schwarz GmbH joined forces to demonstrate the successful realization of a quantum key distribution (QKD) protocol in the microwave regime. This significant achievement is highly relevant for modern communication systems.
The workshop on Rare-Earth Ions for Quantum Information 2024 is taking place in Munich from 17 to 20 September 2024, hosted by the Bavarian Academy of Sciences and Humanities in its premises at the Munich Residence. The oranizing team includes Nadezhda Kukharchyk of WMI/BAdW and Andreas Reiserer of NAT/TUM. The scientific program will be complemented by an informal get-together in the evening of September 17, and lab tours on September 20 in the afternoon.
In a recent Physical Review Letters, a team of researchers from the Walther-Meißner-Institute (WMI) of the Bavarian Academy of Sciences and Humanities (BAdW), the Technical University of Munich (TUM), the ETH Zürich, the University of Konstanz and the Universidad Autónoma de Madrid (UAM) has demonstrated the transfer of spin information between two separated ferromagnetic metal strips harnessing magnetic excitations, providing a new avenue for spintronics.
