Scalable generation and characterization of a four-photon twelve-qubit hyperentangled state
Kun Du, Cong‐Feng Qiao · Journal of Modern Optics · 2012
An experimentally feasible scheme for generating a 12-qubit hyperentangled state via four photons, entangled in polarization, frequency and spatial mode, is proposed. We study the nature of quantum non-locality of this hyperentangled state by evaluating its violation degree to a Bell-type inequality, and find that the result agrees well with quantum mechanics prediction while extremely contradicting the local realism constraint.