[Worldkings] Top 50 Universities with Innovative Research (P. 33) University of Sussex (UK): A new breakthrough in the development of quantum computing technology


(Worldkings.org) UK scientists have made a major breakthrough in developing practical quantum computers – connecting quantum microchips for the first time.

For the first time, researchers from the University of Sussex and Universal Quantum have proved that quantum bits (qubits) can directly transfer between quantum computer microchips. This has been demonstrated with record-breaking speed and accuracy. The breakthrough is set to resolve a major challenge in building quantum computers large and powerful enough to tackle complex problems that are important to society. 


Currently, quantum computers operate on the 100-qubit scale, but to answer crucial problems that cannot be solved by today’s supercomputers, experts predict that millions of qubits will be required.1,2 There is a global quantum race to develop quantum computers that can assist in complex societal challenges, such as drug discovery and improving the energy efficiency of fertiliser production. 

In the research paper, titled ‘A high-fidelity quantum matter-link between ion-trap microchip modules,’ the scientists demonstrated how they have used a novel technique, called ‘UQ Connect,’ to use electric field links to enable qubits to move from one quantum computing microchip module to another with unparalleled speed and precision. This enables chips to slot together to develop a more powerful quantum computer.

The scientists were successful in transporting the qubits with a 99.999993% success rate and a connection rate of 2424/s. These numbers are both world records and orders of magnitude better than previous solutions. 

Professor Winfried Hensinger, Professor of Quantum Technologies at the University of Sussex and Chief Scientist and Co-founder at Universal Quantum, said: “As quantum computers grow, we will eventually be constrained by the size of the microchip, which limits the number of quantum bits such a chip can accommodate. As such, we knew a modular approach was key to make quantum computers powerful enough to solve step-changing industry problems. In demonstrating that we can connect two quantum computing chips – a bit like a jigsaw puzzle – and, crucially, that it works so well, we unlock the potential to scale-up by connecting hundreds or even thousands of quantum computing microchips.” 


While linking the modules at world-record speed, the scientists confirmed that the quantum nature of the qubit remains untouched during transport. For instance, the qubit can be both zero and one at the same time. 

Dr Sebastian Weidt, CEO and Co-founder of Universal Quantum, and Senior Lecturer in Quantum Technologies at the University of Sussex said: “Our relentless focus is on providing people with a tool that will enable them to revolutionise their field of work. The Universal Quantum and University of Sussex teams have done something truly incredible here that will help make our vision a reality. These exciting results show the remarkable potential of Universal Quantum’s quantum computers to become powerful enough to unlock the many lifechanging applications of quantum computing.” 


According to innovationnewsnetwork.com

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