Program

P.23 -- Poster, NCTP-41

Date: Tuesday, 2 August 2016

Time: 08h30 - 10h00

A broadband laser-driven Kerr-like nonlinear coupler and entanglement

Doan Quoc Khoa (1), Cao Long Van (2), Nguyen Thi Dung (3), Le Thi Hoa (3), Nguyen Thi Thu (3) and Bui Van Dung (3)

(1) Quang Tri Teacher Training College, Quang Tri, Viet Nam; (2) University of Zielona Góra, Zielona Góra, Poland; (3) Hong Duc University, Thanh Hoa, Viet Nam

We present a model of Kerr-like nonlinear coupler, in which external coherent field is modeled by white noise. For such a system we derive a set of coupled stochastic integro-differential equations that can be averaged exactly. This result leads to some exactly analytical expression for the probability amplitudes of n-photon Fock states. In addition, we can see that the system is also able to generate Bell-like states and, as a consequence, the coupler discussed behaves as a two-qubit system. We also analyse the effects of dissipation on entanglement of formation parameterised by concurrence and compare these results with that obtained previously by other authors. As a interesting result, initially for a period of time the entanglement is enlarged when the chaotic parameter increases.

Presenter: Doan Quoc Khoa