Fig. 3: Observation of the spinor oscillation in the weak coupling regime.
From: Spin-orbit Rabi oscillations in optically synthesized magnetic fields
The spinor starts from an equatorial position \((\theta =\pi /2,\varphi =\pi /2)\) where the spin and orbital angular momentum are zeros. A typical parameter of the nondiffracting mutual beam is chosen as r0 = 3.5 μm. In the presence of synthetic magnetization (\(\bar{\gamma }=0.19\)), the spinor evolves adiabatically from the equator toward the north pole, giving rise to a separation between the spin and orbital angular momentum. The Rabi oscillation is manifested partially by the separated orbital-angular-momentum oscillation along with the coupling length. a, b The interferograms recorded at different coupling lengths: a experiments; b simulations. c Simulated phase distributions of the light field at the corresponding coupling lengths. Panels in a (b, c) share the same scale, with a scale bar of 200 μm (5 μm)
