For quantum computers to effectively solve complex problems, they must be based on logical qubits, which are characterized by high stability and a low error rate. A few months ago, Microsoft and Quantinuum made a breakthrough by combining Microsoft’s qubit virtualization system with Quantinuum’s H-Series ion trap qubits. They then managed to create four logical qubits from 30 physical qubits, with the error rate of the logical ones being the same as much as 800 times lower than in the case of physical ones.
This impressive result was only the beginning. In recent months, cooperation between Microsoft and Quantinuum has brought another achievement – 12 logical qubits were created from 56 physical ones, achieving at the same time extremely high accuracy of 99.8%.
The key element is quantum entanglement. This phenomenon makes it possible to link qubits together in such a way that the state of one qubit affects the state of the other, regardless of the distance between them.
Microsoft and Quantinuum demonstrated the entanglement of logical qubits in a complex configuration known as the Greenberger-Horne-Zeilinger state, which is more complex than previously studied Bell states. As a result, it was obtained error of only 0.0011much lower than 0.024, which is the average physical error rate of qubits.
The advances open new possibilities for deeper and more advanced quantum computing. The path to error-tolerant quantum computers, which could revolutionize all technology, is getting shorter.
However, the cooperation between Microsoft and Quantinuum does not end with experiments with qubits. Researchers from both companies have already started apply your achievements to real scientific problemsespecially in the field of chemistry. By combining logical qubits with artificial intelligence and high-performance cloud computing, research teams successfully solved a complex scientific problem – estimation of the ground state energy of an important chemical catalyst.
Although quantum computing technology is still in its development phase, the current collaboration between Microsoft and Quantinuum shows that we are well on our way to discovering its full potential.
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Source: geekweek.interia.pl
