Revolution in quantum computing: Finnish researchers reach record coherence time!

Revolution in quantum computing: Finnish researchers reach record coherence time!

What is actually going on in the world of quantum computing? Recently, researchers from Finland have made a remarkable progress that extended the coherence times of superconductive transmon quBis to almost a millisecond. This is a real game change, since this coherence period of over 1 millisecond-more precisely 1.057 milliseconds-far exceeds the previous records. According to Gizmodo, this represents a significant step towards a more practical use of quantum computers.

These impressive results were presented by a study published in Nature Communications by Aalto University and the VTT Technical Research Center of Finland. The researchers have worked with optimized niobium patterns, improved productions of Josephson junctions and controlled thermal and chemical treatments. This technical advances could have far -reaching effects on the error quotas and the reliability of quantum calculations, which further drives the generality of this technology.

The challenge of decorativeness

As we know, the coherence period of a quBIT is crucial because it describes how long a qubit can maintain its quantum mechanical state without losing information. A longer coherence period means less mistakes, especially if the number of qubits increases. Previous tests have shown that the coherent time of transmon-quBITS typically was below 400 microseconds. So that's a huge leap forward!

a future -oriented potential

The progress in this regard is not only important for academic research, but also lay the foundation for the next generations of quantum computers. The Google Sycamore processor has 53 qubits, but other players such as the Quantinuum company with 56 qubits still have to achieve real quantum supervision. In contrast, Google's Willow processor with 105 quBITs could continue here. But the findings from the latest studies are clear: In order to achieve a broad application of the quantum computers, there are still a few challenges.