# Symmetric extendibility for a class of qudit states

@article{Ranade2009SymmetricEF, title={Symmetric extendibility for a class of qudit states}, author={Kedar S. Ranade}, journal={Journal of Physics A: Mathematical and Theoretical}, year={2009}, volume={42}, pages={425302} }

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…

## 6 Citations

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The aim, so far unfulfilled, is to prove existence of SICs in an infinite sequence of dimensions.

### Extendibility of Werner States

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- 2022

We investigate the two-sided symmetric extendibility problem of Werner states. The interplay of the unitary symmetry of these states and the inherent bipartite permutation symmetry of the…

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