Fraunhofer EMFT is developing foil-based superconducting cables to address a critical challenge in scaling quantum computers. The institute reports these flexible cables reduce heat input and free up valuable space within the cryostat, the ultra-cold environment where superconducting qubits operate at around -273 degrees Celsius, just above absolute zero.
Daniela Zahn and Elias Meltzer presented the research at the event, offering visitors a direct look at the technology and insights into controlling and reading out qubits within the cryostat. This development aims to enable the creation of practical, fault-tolerant quantum computers requiring a large number of reliably controllable qubits.
Foil Cables Reduce Heat Input for Scalable Qubit Control
Superconducting qubits within Fraunhofer EMFT’s quantum computers operate at approximately -273 degrees Celsius, a temperature just above absolute zero that demands innovative engineering solutions for signal transmission. Foil-based superconducting cables address the challenge of maintaining these ultralow temperatures while increasing qubit density within the cryostat. These cables minimize thermal conductivity, reducing heat input to the qubits and improving the overall performance of the quantum processor.
The design’s flexibility also allows for denser packing of components, a critical factor as the number of qubits scales toward the levels needed for fault-tolerant computation. Daniela Zahn and Elias Meltzer presented these advancements at the “MQV-Einblicke – Quantenwissenschaften vor Ort erleben” event, detailing how signals travel to and from the quantum processors.
Visitors to the cryo lab observed the technology firsthand, gaining insight into controlling and reading out qubits in this extreme environment. The “MQV-Einblicke – Quantenwissenschaften vor Ort erleben” event offered a direct look at the institute’s work, highlighting its commitment to public engagement and knowledge sharing in the rapidly evolving field of quantum computing. Fraunhofer EMFT reports these cables are a key requirement for equipping quantum computers with ever more qubits.
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