We demonstrate the entangled photon pair generation via biexciton-resonant hyper parametric scattering in CuCl crystal. Quantum tomographic analysis of the polarization correlation measurements showed that the generated photon pairs had a high degree of polarization entanglement, in consequence of J=0 angular momentum of the biexciton state.
We demonstrate the first experimental realization of the entangled photon pair generation via biexciton-resonant hyper parametric scattering in CuCl crystal. Polarization correlation measurements and quantum tomographic analysis shows that the generated photon pairs have high degrees of polarization entanglement.
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