Two eigenstates

Light in a crystal and a neutrino in vacuum: one principle of propagation.

Light in a crystal

L = 1.00 λ₀
Polarization 1Polarization 2Sum E
InputOutput axis 1axis 2

Input: β = 0°

Circular polarization

The output is the sum of the two polarizations.

Neutrino in vacuum

L = 82.7 km
ν₁ν₂Sum ψ
Input: νₑMeasurement ν₁ν₂

Input: νₑ · θ = 33.7°

Probabilities at the output

Pₑ0.574
Pₓ0.426

Pₑ + Pₓ = 1

Actual polarization directions of the lightState space · the overall phase of the picture is conventional

Move the shared slider: it sets the same phase difference in the two experiments.