Intel has unveiled a revolutionary quantum research control chip called Pando Tree, which operates at mikelvin temperatures and aims to address the wiring bottleneck that limits the scaling of quantum computing. This chip represents a significant advancement in quantum control systems, as it is the first semiconductor manufacturer to demonstrate the distribution of cryogenic silicon spin qubit control electronics within a dilution refrigerator.
The Pando Tree chip, presented at the 2024 IEEE Symposium on VLSI Circuits and Technology, is a key step in overcoming the challenges associated with controlling qubits at cryogenic temperatures. Traditional control electronics, operating at room temperature, struggle to maintain signal fidelity and manage the complex wiring needed to interact with qubits at cryogenic temperatures. Intel’s innovative solution involves a dual-chip system: Horse Ridge II, operating at 4 kelvin, and Pando Tree at mikelvin temperatures. Horse Ridge II generates control voltages and communicates with Pando Tree to distribute control signals to the qubits, reducing the complexity of the system.
Pando Tree is able to provide constant voltage bias and high-speed voltage pulses to up to 64 qubits, demonstrating the highest interconnect demultiplexing capability in mikelvin control electronics to date. This capability is essential for optimizing qubit performance and implementing complex quantum algorithms. Furthermore, by demultiplexing control signals, Pando Tree significantly reduces the number of input signals required to control multiple qubits, making quantum systems more efficient and scalable.
The integration of Pando Tree at mikelvin temperatures allows for more efficient management of the interconnections between the control electronics and the qubit chip, reducing wiring complexity and improving control fidelity. Intel’s approach to addressing the wiring bottleneck in quantum computing has been deliberate and evolutionary, with the introduction of Horse Ridge in 2020 and the subsequent development of Horse Ridge II.
In conclusion, Intel’s Pando Tree chip represents a major advancement in quantum control systems, offering a solution to the wiring bottleneck that limits the scaling of quantum computing. By operating at mikelvin temperatures and providing advanced demultiplexing capabilities, Pando Tree enables more efficient control of qubits, facilitating the development and scaling of quantum systems. Intel’s integration of advanced packaging technologies with Pando Tree further enhances the efficiency and scalability of quantum computing systems in the future.
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https://thequantuminsider.com/2024/06/21/intel-debuts-new-chip-focused-on-addressing-quantum-computings-wiring-bottleneck/