Colóquio: Entanglement mediation and single-particle nonlocality (Prof. Dr. Bertúlio de Lima Bernardo - UFCG)

Colóquio

“Entanglement mediation and single-particle nonlocality”

RESUMO:As famously mentioned by Schrödinger, entanglement is “the characteristic trait of quantum mechanics,” and provides physical consequences which are incompatible with any classical interpretation. Because of such incompatibilities, many promising applications of quantum theory at the fundamental level may become possible, such as quantum cryptography and quantum teleportation. In this context, it is fundamental to establish ways to create entanglement between two or more systems at long distances. In this seminar, we present the theory of entanglement and describe novel quantum information protocol, named “entanglement mediation,” which probabilistically entangles two distant photons that have never interacted. In this respect, it is shown that the photon which mediates entanglement between the two neighboring particles seems to be present at two distant locations simultaneously.