Generation of Maximally Entangled States by a Kerr-like Nonlinear Coupler Interacting with External Fields

Doan Quoc Khoa, Luong Thi Tu Oanh, Chu Van Lanh, Nguyen Thi Dung, Do Hong Son
Author affiliations

Authors

  • Doan Quoc Khoa Quang Tri Teacher Training College, Dong Ha, Quang Tri, Vietnam
  • Luong Thi Tu Oanh Vinh University, 182 Le Duan, Vinh, Vietnam and Nghe An College of Education, Vinh, Vietnam
  • Chu Van Lanh Vinh University, Vinh, Nghe An, Vietnam
  • Nguyen Thi Dung Hong Duc University, Thanh Hoa, Vietnam
  • Do Hong Son Hong Duc University, Thanh Hoa, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/29/3/13742

Keywords:

03.65.Ud, 42.50.Dv

Abstract

We study a model with two nonlinear oscillators (Kerr-like nonlinear coupler) pumped by two external coherent fields as a nonlinear quantum scissor (NQS). Using the numerical simulation method introduced before for quantum state engineering in NQS of such type, we obtain the wave function describing the evolution of the system as a combination of n-photon states. Considered NQS generates a truncation of optical states that leads to achieve two-qubit states due to the nonlinear properties of oscillators and their interaction. In particular, evolution of the system generates maximally entangled states as so-called Bell-like states. We will show that a proper choice of initial conditions for such evolution implies the increase of efficiency of entanglement creation process. We consider our model for both damping and without damping cases.

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Published

13-08-2019

How to Cite

[1]
D. Q. Khoa, L. T. T. Oanh, C. V. Lanh, N. T. Dung, and D. H. Son, “Generation of Maximally Entangled States by a Kerr-like Nonlinear Coupler Interacting with External Fields”, Comm. Phys., vol. 29, no. 3, p. 223, Aug. 2019.

Issue

Vol. 29 No. 3 (2019)

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Papers

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Received 09-04-2019
Accepted 22-07-2019
Published 13-08-2019