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Quantum information transmission through a qubit chain with quasi-local dissipation

Radgohar, R ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. Publisher: Rinton Press Inc , 2018
  3. Abstract:
  4. We study quantum information transmission in a Heisenberg-XY chain where qubits are affected by quasi-local environment action and compare it with the case of local action of the environment. We find that for open boundary conditions the former situation always improves quantum state transfer process, especially for short chains. In contrast, for closed boundary conditions quasi-local environment results advantageous in the strong noise regime. When the noise strength is comparable with the XY interaction strength, the state transfer fidelity through chain of odd/even number of qubits in presence of quasi-local environment results smaller/greater than that in presence of local environment. © Rinton Press
  5. Keywords:
  6. Decoherence ; Open systems ; Quantum communication
  7. Source: Quantum Information and Computation ; Volume 18, Issue 3-4 , March , 2018 , Pages 231-246 ; 15337146 (ISSN)
  8. URL: http://www.rintonpress.com/journals/qiconline.html#v18n34