Quantum-Mechanics | Sebastian Spicker

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. physicsquantum-mechanicsquantum-computing

2023

1 article

13 Nov 2023 Non-Commutative Pre-Schoolers Socks before shoes is a useful analogy for order-dependent operations. It does not explain quantum uncertainty, and infant sequence memory is not evidence of group-theoretic understanding. The shared structure is narrower: changing operation order can change, or prevent, the result. algebraquantum-mechanicsgroup-theory