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Schrodinger
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2025
1 article
27 Jan
2025
From Thought Experiment to Qubit: Schrödinger’s Cat at Ninety
In 1935, Schrödinger introduced the cat as a reductio ad absurdum of quantum superposition. Ninety years later, “cat states” — superpositions of coherent states with opposite phases — are a practical tool in quantum computing. Bosonic cat qubits can bias bit-flip errors exponentially with photon number under appropriate stabilisation, and are a serious candidate architecture for fault-tolerant quantum computation. The cat is no longer a paradox. It is a qubit.
physics
quantum-mechanics
quantum-computing