Programme

P.19 -- Poster, VCTP-48

Date: Tuesday, 1 August 2023

Time: 08:30 - 10:00

Enhancement of teleportation average fidelity via photon addition operation

Truong Minh Duc (1), Tran Quang Dat (2)

(1) Department of Physics, University of Education, Hue University, Hue, Viet Nam; (2) University of Transport and Communications, No. 3 Cau Giay Street, Lang Thuong Ward, Dong Da District, Ha Noi, Viet Nam

As we know, the addition of photons to a two-mode squeezed vacuum state (TMSVS) has been shown to enhance the von Neumann entropy of this state. However, this effect reduces the average fidelity of quantum teleportation over traditional protocols. In this paper, using the linear entropy criterion, we demonstrate that the addition of photons can also enhance the entanglement degree of the TMSVS. When using photon-added TMSVSs as the entanglement resources to teleport a coherent state via a non-canonical protocol, the results show that the average fidelity is enhanced by the photon addition operation. This coefficient increases as the number of photons added to the two-mode increases. In addition, we also show that the average fidelity enhancement can also be achieved by increasing the squeezing parameter of the TMSVS.

Presenter: Tran Quang Dat