Programme

O.24 -- Oral, VCTP-46

Date: Wednesday, 6 October 2021

Time: 15:10 - 15:30

Joint remote preparation of single-photon in three degrees of freedom with two hyper-bell state pairs

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

(1) Center for Theoretical Physics, Institute of Physics, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam (2) Thang Long Institute of Mathematics and Applied Sciences (TIMAS), Thang Long University, Nghiem Xuan Yem, Hoang Mai, Hanoi, Vietnam

Hyperentanglement has attracted much attention due to its fascinating applications in quantum communication. It becomes a promising resource in quantum information processing with its high capacity character. In this work, we devise a protocol for two senders to jointly prepare a single-photon in three qubit state for a receiver by using two hyper-Bell state pairs as quantum channels. Namely, Alice, Bob and Charlie are three remote parties. Alice and Bob independently share the classical knowledge of a secret single photon in three degrees of freedom which are polarization, left and right spatial-mode and internal and external spatial-mode in such a way that no one alone is able to fully identify the photon. The work presents how can Alice and Bob jointly prepare the photon for Charlie when they share beforhand two hyper-Bell state pairs.

Presenter: Cao Thi Bich