Symmetric extendibility for a class of qudit states

  title={Symmetric extendibility for a class of qudit states},
  author={Kedar S. Ranade},
  journal={Journal of Physics A: Mathematical and Theoretical},
  • Kedar S. Ranade
  • Published 29 June 2009
  • Mathematics
  • Journal of Physics A: Mathematical and Theoretical
The concept of symmetric extendibility has recently drawn attention in the context of tolerable error rates in quantum cryptography, where it can be used to decide whether quantum states shared between two parties can be purified by means of entanglement purification with one-way classical communication only. Unfortunately, at present there exists no simple general criterion to decide whether a state possesses a symmetric extension or not. In this paper, we derive criteria for symmetric… 
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