Researchers from the University of Sussex and Universal Quantum have demonstrated for the first time that quantum bits (qubits) can be directly transferred between quantum computer microchips and have done so with record speed and accuracy. This breakthrough addresses a major challenge in building quantum computers that are large and powerful enough to tackle complex problems of fundamental importance to society.
Today, quantum computers operate on the 100-qubit scale. Experts estimate that millions of qubits are needed to solve important problems beyond the reach of today’s most powerful supercomputers.
There is a global quantum race to develop quantum computers that can help with many important societal challenges from drug discovery to the energy efficiency of fertilizer production and solving important problems in almost every industry, from aerospace to the financial sector.
In a research paper published today in Nature Communications, the researchers demonstrate how they used a new and powerful technique they call “UQ Connect” to use electric field coupling to allow qubits to move from one quantum computing microchip module to another. with unprecedented speed and accuracy. This allows the chips to fit together like a jigsaw puzzle to create a more powerful quantum computer.
The University of Sussex team and Universal Quantum were successful in transporting qubits with a success rate of 99.999993% and a connection speed of 2424/s, both figures are world records and orders of magnitude better than previous solutions.
Modular approach
Professor Winfried Hensinger, Professor of Quantum Technology at the University of Sussex and Principal Scientist and Co-Founder of Universal Quantum, said: “As quantum computers grow, we will eventually be limited by the size of the microchip, which limits the number of quantum bits. such a chip can accommodate. We knew that a modular approach was key to making quantum computers powerful enough to solve changing industrial problems. By demonstrating that we can connect two quantum computing chips — a bit like a jigsaw puzzle — and most importantly, that it works so well, we unlock the potential for scaling by connecting hundreds or even thousands of quantum computing microchips.”
Professor Sasha Roseneil, Vice-Chancellor of the University of Sussex, said: “It is fantastic to see that the inspired work of the University of Sussex and universal quantum physicists has resulted in this phenomenal breakthrough, taking us a significant step closer to a quantum computer. which will have real social use. These computers have unlimited uses – from improving drug development, creating new materials to possibly unlocking solutions to the climate crisis.
He also says “The University of Sussex is investing heavily in quantum computing to support our bold ambition to host the world’s most powerful quantum computers and create change that has the potential to positively impact so many people around the world. And with teams spanning the spectrum of quantum computing and technology research, the University of Sussex has both and a depth of expertise in this area. We continue to expand our research and teaching in this area with plans for new tea, jing programs and new meetings.”
Professor Keith Jones, Interim Provost and Pro-Vice-Chancellor for Research and Enterprise at the University of Sussex, said of the development: “This is a very exciting finding by our University of Sussex and Universal Quantum physicists. It demonstrates the value and dynamism of this spin-out company from the University of Sussex, whose work is based on rigorous and world-leading academic research.
He also said “Quantum computing will be key to solving some of the most pressing global problems. We are delighted that Sussex academics are delivering research that offers hope in realizing the positive potential of next-generation quantum technology in key areas, such as sustainability, drug development and cyber security.”
