Transferência de estados quânticos em cadeias com desordem diluida

Abstract

Computer Science revolutionized the processing, transmission and storage of information, leading to some limitations that arose with the minimization of electronic components at the atomic level. Therefore, it was proposed a new computational model based on the laws of Quantum Physics, Computing, and Quantum Information; however, building computers with this new theory has proved to be very challenging in the face of experimental limitations. Many models for transmitting information have been proposed, and one of the most studied is electronic transport in materials with the disorder. One of the most successful models to explain this phenomenon is the Anderson Location model. The study of crystalline and disordered networks is a strong candidate to assist the development of electronic components in implementing these new computers. In this work, We investigate a single-qubit state transfer protocol along a channel featuring diluted diagonal disorder. In the regime where the source and destination sites are weakly coupled to the channel, we report the possibility of transmitting quantum states with high fidelity and establishing end-to-end entanglement in that configuration. We further discuss how the protocol’s performance depends upon the availability of extended states within the disordered channel.