Quantum computers that are actually useful 1 step closer thanks to new silicon processor that could pack millions of qubits

A quantum computing company, Equal1, has made significant strides in developing a silicon-based quantum processor that could revolutionize the field. Their new quantum processing unit (QPU) can be manufactured using standard semiconductor processes, avoiding the complexities and costs associated with exotic materials. They’ve also created a highly complex quantum controller chip capable of operating at ultra-low temperatures, paving the way for millions of qubits on a single chip.

This contrasts with current quantum chips that house only thousands of qubits and require near-absolute zero temperatures. Equal1’s use of silicon, particularly silicon germanium (SiGe), provides a stable environment for qubits and allows for production in existing chip factories. Their 6-qubit array has demonstrated high accuracy and speed in quantum gate operations, crucial for reliable quantum computations. The device employs “spin qubits” which are well-suited for silicon integration, and their controller chip features a multi-tile architecture and AI-driven error correction for stability. Equal1 believes that these advancements mark a critical turning point, demonstrating that silicon is the key to scaling quantum computers and realizing their potential.