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Influence of the disorder correlation length on localization and quantum state transference in tight-binding channels

Author

Listed:
  • J. D. S. Silva

    (Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil†Centro de Informática, Universidade Federal de Pernambuco, Recife, PE 50740-560, Brazil)

  • G. M. A. Almeida

    (Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil)

  • M. L. Lyra

    (Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil)

  • F. A. B. F. de Moura

    (Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil)

Abstract

We investigate in detail the transference of quantum states in a disordered channel. We consider a one-dimensional tight-binding model consisting of a source S connected to a receiver R throughout a disordered channel. The disorder distribution contains a single tunable spatial correlation length. We demonstrate that the disorder correlation length plays a relevant role within the localization properties of the channel. The hopping parameter between the sites S and R and the channel are also adjustable parameters. We investigate the possibility of transference of quantum states along this quantum channel model and describe the optimal conditions for the occurrence of a high fidelity process.

Suggested Citation

  • J. D. S. Silva & G. M. A. Almeida & M. L. Lyra & F. A. B. F. de Moura, 2024. "Influence of the disorder correlation length on localization and quantum state transference in tight-binding channels," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 35(11), pages 1-12, November.
    • Handle: RePEc:wsi:ijmpcx:v:35:y:2024:i:11:n:s0129183124501444
    DOI: 10.1142/S0129183124501444
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