  The Aharonov-Anandan phase is a description of the geometric nature in
non-adiabatic cyclic evolutions of quantum states. Here we report on a
measurement of the Aharonov-Anandan phase in photonics. We consider a
time-independent quantum driven harmonic oscillator that is initially prepared
at the vacuum state. We utilize evanescently coupled waveguides to realize this
physical model and achieve a measurement of the Aharonov-Anandan phase via
integrated interferometry.
