Entangling Circularly Polarized Light with the Quantum Zeno Effect

The quantum Zeno effect reveals that a continuously observed quantum system exhibits a natural suppression of its time-evolution. And, as a consequence, the system experiences a measurement-dependent restriction of accessible quantum states. Therefore, one should be able to force a group of particles into an entangled state with the quantum Zeno effect. Here, we present a scheme, supported by numerical simulations, where an unentangled photon pair enters each side of a coupled waveguide and evolves into a polarization entangled state. Additionally, we find that the same technique can be used in the generation of W-states. Our findings present a robust avenue for photonic-based quantum applications without the need for distribution protocols.