Towards realization of universal quantum teleportation using weak measurements

Noise is a major hurdle in realizing quantum technologies as it affects quantum protocols like teleportation, dense coding. It is possible to use techniques like weak measurements to reduce the noise effect and protect quantum correlations. This work addresses the extent of applicability of weak measurements to enhance the efficiency of the quantum teleportation of a qubit through a noisy quantum channel, aiming towards universal quantum teleportation. Due to the effects of noise, the average fidelity of teleportation tends to vary; weak measurements can reduce these fidelity deviations to a value close to zero. We also study the effect of memory and its impact on fidelity and fidelity deviations in the proposed teleportation protocol. The memory effects, with the aid of weak measurement and its reversal, are shown to give better results for teleportation. The extent of applicability of the proposed protocol for protecting quantum correlations, under the influence of different noise channels, are studied in the present work.