Intel recently introduced a millikelvin-level low-temperature quantum control chip named "Pando Tree." Intel claims it is the industry's first demonstration of a low-temperature control electronic device capable of controlling spin qubits within a dilution refrigerator. Utilizing Pando Tree's demultiplexing capabilities, Intel needs only about 20 cables to control one million qubits. This innovation represents a significant step forward in addressing the wiring bottleneck that limits the scaling of quantum computing.

Quantum computing developer Diraq announced yesterday that IMEC has successfully manufactured their silicon spin qubits on 300mm silicon wafers using standard CMOS materials and processes, achieving 99.9% fidelity in single qubit control. This milestone enables Diraq to achieve the precision necessary for producing robust error-corrected quantum computers in existing silicon foundries. It is reported that Diraq-designed quantum chips will be manufactured this year by GlobalFoundries using their 22FDX technology.

Researchers from RIKEN have demonstrated a new method to measure silicon-based spin qubits with an accuracy of more than 99% and a measurement time of just a few microseconds. Instead of measuring the spin of a single electron by detecting magnetic fields, the team converted the spin into an electrical charge before making the measurement. They built a silicon device capable of trapping two electrons and then inferred the quantum state by monitoring the current flowing through the device.