Fraunhofer Institute for Electronic Microsystems and Solid State Technologies EMFTPrecise cryogenic measurement methods are essential for the development of superconducting quantum computers: they contribute significantly to understanding the properties of quantum hardware components, like e.g. qubits or signal interconnects, and thus help to improve their quality, stability and performance. At Fraunhofer EMFT, we provide the know-how and equipment to run complex analyses and characterizations in a cryogenic measurement environment of a few millikelvin.
Cryogenics: Characterization of Quantum Hardware Components
The Fraunhofer EMFT cryolab team preparing the cryostat for measurements on superconducting qubits.
The analyses at extremely low temperatures contribute significantly to researching the properties of superconducting qubits. For example, profound predictions can be made about ageing processes and degradation. A central goal is to identify suitable hardware components for use in quantum computing.
The team at Fraunhofer EMFT focuses on the detailed analysis and characterization of advanced technologies such as
- superconducting qubit chips
- through-silicon vias (TSV) and flip-chip technologies for 3D integration in quantum processing units (QPUs)
- flexible superconducting interconnects
- control and readout electronics at cryogenic temperature stages
For process control monitorization (PCM), high measurement throughput and direct feedback to the Fraunhofer EMFT fabrication pilot line are essential to minimize the variance between manufactured quantum hardware components (e.g. qubits, 3D integration technologies, superconducting interconnects) and thus ensure high scalability.
Our 3He-4He mixed cryostat reaches temperatures below 10 mK, offers more than 60 RF and 40 DC lines and, in addition to sufficient space for large samples, also a high cooling capacity (>14 µW at 20 mK and >1.5 W at 4 K). A precise scientific approach and a high degree of flexibility enable us to meet the diverse cryogenic measurement requirements.
We contribute this know-how to the Munich Quantum Valley (MQV) research cooperation, among others like MUNIQC-SC National project and the OpenSuperQPlus European consortium.