Partial teleportation of entanglement in a noisy environment

Hua-Qiu Liang, Jin‐Ming Liu, Shangshen Feng +1 more

Ri‐Gui Zhou, Xiao-Xue Zhang, Lin-Tao Du

Simranjot Kaur, Priyanka Priyanka, Jawahar Lal +1 more

Simranjot Kaur, Savita Gill

Jinhyoung Lee, M. S. Kim, Y. J. Park +1 more

Partial teleportation of entanglement is to teleport one particle of an entangled pair through a quantum channel. This is conceptually equivalent to quantum swapping. We consider the partial teleportation of entanglement in the noisy environment, employing the Werner-state representation of the noisy channel for the simplicity of calculation. To have the insight of the many-body teleportation, we introduce the measure of correlation information and study the transfer of the correlation information and entanglement. We find that the fidelity becomes smaller as the initial state is entangled more for a given entanglement of the quantum channel. The entangled channel transfers at least some of the entanglement to the final state.

S. Aliloute, Abderrahim El Allati, Ibrahim El Aouadi +1 more

A bidirectional quantum teleportation protocol is introduced over a quantum network consisting of more than four members sharing a coherent entangled state, where it is implemented in a perfect or noisy environment. The results show that the amplitude of the coherent state and the decoherence parameter play important roles in maximizing or minimizing this probability. At fixed values of the amplitude and decoherence parameters, the success of probability increases as the number of users increases. The fidelity of the teleported coherent state depends on the type of encoded information, whether entangled/partial or classical information, namely, it depends on the weight parameter. The stable behavior of the fidelity is displayed when users teleport classical information.