Lab 03, Quantum foundations
Quantum Foundations Visualizer
Compare a classical bit with a qubit, collapse a superposition by measuring it, and watch a quantum sensor pull a faint signal out of noise.
Bit vs qubit
Classical bit
One value at a time. Click to flip it. Read it a thousand times and you get the same answer a thousand times.
Qubit
|ψ⟩ = 0.71|0⟩ + 0.71|1⟩
P(0) = 50% · P(1) = 50%
Quantum sensing: reading a faint signal
A quantum magnetometer works because its state is delicate enough to be moved by a magnetic field far too small for a classical sensor, a neuron firing, water moving underground. The fight is always signal against noise.
Signal-to-noise
0.76×
Buried in noise. Either shield the sensor, hold coherence longer, or average more runs.