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Generation of entangled states by a nonlinear coupler pumped in one mode induced by broadband laser

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Abstract

Kerr nonlinear coupler consists of two nonlinear oscillations in which one of them linearly excited by an external classical field. This is assumed to be decomposed into two parts: a coherent part and a randomly fluctuating chaotic component that is a δ-correlated, Gaussian, Markov, stationary process (white noise). We solve a set of coupled stochastic integro-differential equations involved in the problem with all initial conditions and obtain analytical formulae for the complex probability amplitudes of finite n-photon Fock states. Especially, our study shows that the system is also able to generate maximally entangled states and, as a consequence, the coupler discussed behaves as a two-qubit system and the results compared with those derived previously in the literature.

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Acknowledgements

This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.03-2017.28.

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Authors and Affiliations

  1. Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Khoa Doan Quoc

  2. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Khoa Doan Quoc

  3. Vinh University, 182 Le Duan, Vinh City, Vietnam

    Oanh Luong Thi Tu & Lanh Chu Van

  4. Nghe An College of Education, Vinh City, Vietnam

    Oanh Luong Thi Tu

  5. Hong Duc University, 565 Quang Trung, Thanh Hoa City, Vietnam

    Dung Nguyen Thi & Hoa Nguyen Van

Authors
  1. Khoa Doan Quoc
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  2. Oanh Luong Thi Tu
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  3. Lanh Chu Van
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  4. Dung Nguyen Thi
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  5. Hoa Nguyen Van
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Correspondence to Khoa Doan Quoc.

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Doan Quoc, K., Luong Thi Tu, O., Chu Van, L. et al. Generation of entangled states by a nonlinear coupler pumped in one mode induced by broadband laser. Opt Quant Electron 52, 13 (2020). https://doi.org/10.1007/s11082-019-2133-0

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