Hyper-entangled photon pairs

Marco Barbieri

Krishna Thyagarajan

Jing Suo, Wei Zhang, Shuai Dong +2 more

We propose and demonstrate a scheme to realize frequency entanglement based on a silicon micro-ring resonator. The generated photon pairs also possess the property of energy-time entanglement. So hyper-entangled photon pairs are generated.

Todd S. Larchuk

Geng Chen, Chuan‐Feng Li, Zhen−Qiang Yin +3 more

We propose a scheme to generate hyper-entangled photon pairs from single quantum dots (SQDs). Single photons emitted by SQD are manipulated to be entangled after post-selection. Crucially, exciton fine-structure splitting, which was previously deemed undesirable in similar schemes, is used here to produce photon pairs entangled in both frequency and polarization degrees of freedom. This hyper-entangled two-photon state is potentially more powerful than a normal entangled state for quantum state engineering and quantum information processing.

Yasufumi YAMAMOTO, Goro Oohata, K. Mizoguchi

We have investigated the quantum statistics of entangled photon pairs generated from biexcitons in CuCl single crystals via resonant hyper-parametric scattering. The generation of multi-photon pairs has been first observed under the high excitation power.