Programme

P.89 -- Poster, VCTP-45

Date: Wednesday, 14 October 2020

Time: 08:30 - 10:00

Online presentation

Controlled teleportation between a continuous-variable state and a discrete-variable state using hybrid entanglement under decoherence effects

Cao Thi Bich (1,2) and Nguyen Ba An (1,3)

(1) Center for Theoretical Physics, Institute of Physics, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam (2) Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam (3) Thang Long Institute of Mathermatics and Applied Sciences (TIMAS)

We propose a linear optics scheme for teleporting two different types of qubits by using hybrid entanglement under the decoherence effects. Namely, the sender can teleport a single-rail qubit to the receiver in spite of the fact that she/he holds a coherent state and vice versa under the supervisor of two controllers who work in two different Hilbert spaces, e.g. finite-dimensional and infinite- dimensional spaces. The quantum channel to be used is a four-particle state which two particles live in finite-dimensional space and the others live in infinite-dimensional space. We calculate and compare the success probability and fidelity between two teleportation processes. In addition, the role of the two controllers is assessed via the analysis of the average fidelity of the teleportation protocol without their participations. It is found out that the power of the controller who holds discrete-variable state is always equal to or larger than that of the other controller who holds continuous-variable state.

Presenter: Cao Thi Bich

Presentation file: