Mint Primer | Google’s Willow: Quantum computing’s next big leap?
Two normal computer bits can exist in four possible states—00, 01, 10, or 11. A quantum computer allows two quantum bits to represent the four states at the same time due to ‘superposition’ and ‘entanglement’ properties, akin to running four computers. A quantum computer’s power grows exponentially with more qubits but it also induces errors, making the system like a normal computer. Further, while Google uses surface code methods to correct errors across large qubit arrays, IBM’s modular error correction approach focuses on breaking quantum systems into smaller, manageable units, each with localized error correction. However, the focus will also be on developing quantum error correction to make quantum computers stable and functional for everyday use, and building quantum algorithms for practical applications.
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