Optics and Photonics Society of Iran

Entanglement is the most important tool in the theory of quantum information processing. In such applications it is crucial to generate and control the entanglement. A candid material for this is the π-electron in graphene. Thus, in the present article we report the entanglement between π-electrons and circularly polarized photons in graphene. Our calculations show that the degree of entanglement between the π-electrons and photons is much sensitive to the photonic frequency: As the photonic frequency increases, up to the resonance, the entanglement increases, while beyond the resonance the effect is reversed. We also present the physical resonance behind the behavior.