Programme

P.34 -- Poster, VCTP-47

Date: Thursday, 4 August 2022

Time: 08:30 - 10:00

Entanglement, nonlocality, quantum teleportation of two-mode non-Gaussian states with multiphoton quantum catalysis

Tran Quang Dat

University of Transport and Communications, No. 3 Cau Giay Street, Lang Thuong Ward, Dong Da District, Ha Noi, Viet Nam

In this paper, we introduce new two-mode non-Gaussian entangled states, called multiphoton catalytic pair coherent states (MCPCSs), based on the study of multiphoton quantum catalysis on two-mode non-Gaussian states, which are the pair coherent states (PCSs). By investigating linear entropy, Einstein-Podolsky-Rosen (EPR) correlation and EPR steering, it is shown that these properties in the new states can be enhanced compared with the PCSs by increasing the coherent parameter amplitude |ξ|. In the small regions of |ξ| and in transmission coefficients space, the enhanced regions of the degree of entanglement are enlarged with increasing number of catalytic photons, whereas in contrast to the EPR correlation and the EPR steering. Using the MCPCSs as entanglement sources to teleport a coherent state via the Braunstein and Kimble protocol, we calculate the average fidelity F of the teleportation process. The investigated results show that the average fidelity is enhanced in the large regions of the transmission coefficients as small valuesof |ξ|. In particular, for zero-photon catalysis, F is improved in the case of |ξ| high.

Presenter: Tran Quang Dat