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Quantum Mechanics

The physics underneath the computing, said plainly. Superposition, measurement, entanglement, phase, and decoherence, with the mysticism left at the door.

Posts

  1. 10:44 Quantum Computing

    Relative phase: the invisible engine of quantum

    Probabilities cannot see it, the next gate can. Global vs relative phase, and the experiment that makes the invisible visible.

  2. 00:24 Quantum Computing

    Entanglement, explained without the spooky

    The Bell state in two lines of code, what correlated really means, and why none of it sends messages faster than light.

  3. 22:33 Quantum Computing

    Measurement is not magic: the Born rule by hand

    Why a quantum result is a probability: amplitude squared, worked on paper and checked in NumPy, one basis at a time.

  4. 15:38 Milestones

    The density matrix: what the state vector misses

    A pure state fits in a vector. A noisy or entangled one does not. Density matrices, quantum channels, and what they show that vectors miss

  5. 13:16 Quantum Computing

    A qubit is not a coin under a cup

    The superposition myth, taken apart with math you can run. Not a hidden answer waiting to be read, but something stranger and far more precise.