Scientists at California Institute of Technology and startup Oratomic have developed a method to drastically cut the number of qubits needed for fault-tolerant quantum computing, potentially accelerating the arrival of practical machines.
The team says a fully functional quantum computer could operate with as few as 10,000 to 20,000 qubits, far below the millions previously believed necessary.
The advance comes from a new quantum error-correction architecture that reduces the number of redundant qubits required to fix errors, one of the biggest challenges in building reliable quantum systems.
Quantum computers rely on qubits, which are highly sensitive and prone to errors. Existing methods often require about 1,000 physical qubits to create a single logical qubit, making large-scale systems difficult to build.
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