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Robustness of qubit–qudit entanglement under decoherence

  • Hong-Mei Li
  • Xue-Mei SuEmail author
Regular Article
  • 24 Downloads

Abstract

We investigate the robustness of entanglement for a qubit-qudit system under depolarizing and dephasing channels. For depolarizing channel, we obtain a simple analytical expression of entanglement evolution. It is shown that the larger dimension d a qudit subsystem has, the more robust a pure state becomes. For dephasing channel, we find the most robust entangled states and the most fragile ones. Moreover, the robustness of these states is independent of the qudit’s dimension d.

Graphical abstract

Keywords

Quantum Information 

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Copyright information

© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Physics, Jilin UniversityChangchunP.R. China

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