Researchers from the University of Sussex and Universal Quantum have successfully demonstrated transmission
For their work, the researchers developedan ionic qubit control technique they called "UQ Connect". The new approach uses electric field connections to move qubits from one quantum computing microchip module to another.
In a paper published in the journal NatureCommunications, the researchers described the process of creating linked chips. They used two linear Paul traps with surface electrodes as microchips. The modules are designed and placed on a silicon substrate in such a way that the electrode configuration creates an electric field interface between two traps.
Photograph and diagram of the operation of the connection of two quantum microchips. Image: M. Akhtar et al., Nature Communications
In a series of experiments, the researchers showed thatthe designed system successfully transported qubits with a success rate of 99.999993% and a link rate of 2424 Hz. These results are record-breaking and surpass all previous attempts by an order of magnitude. In addition, scientists confirmed that during the transfer process, ions retain their quantum nature, including the ability of a qubit to take on the values "1" and "0" at the same time.
Modern quantum computers operate inthe scale of several hundred qubits trapped in one trap. Significant scaling of technology is not possible without fast and efficient communication between multiple components. The researchers believe that the proposed method will make it possible to create powerful quantum computers powered by millions of qubits.
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On the cover: two connected quantum microchips. Photo: University of Sussex