Related papers: Detection of fidelity and multiparticle entangleme…
This paper has been withdrawn by the author(s), due a crucial sign error in conclusion .
This paper has been withdrawn by the authors due to a crucial error in calculation.
The paper has been withdrawn by the author due to a crucial error.
We present a general theory for the construction of witnesses that detect genuine multipartite entanglement in graph states. First, we present explicit witnesses for all graph states of up to six qubits which are better than all criteria so…
This paper has been withdrawn temporarily.
This paper was withdrawn by arXiv admin due to authors' misrepresentation of identity/affiliation.
This has been withdrawn by the author. A rewrite of some of the material is currently in progress.
This paper has been withdrawn by the authors; the main conclusion is incorrect, as some of the crucial calculations were not properly converged.
This paper has been withdrawn by the authors due to a crucial error.
Graph states are special entangled states advantageous for many quantum technologies, including quantum error correction, multiparty quantum communication and measurement-based quantum computation. Yet, their fidelity is often disrupted by…
This paper has been withdrawn by the authors owing to a mistake in the proof of the basic lemma.
This paper has been withdrawn since it was an inadvertant double submission. An updated version of the original submission can be found at quant-ph/0505131
We investigate multiparticle entanglement purification schemes which allow one to purify all two colorable graph states, a class of states which includes e.g. cluster states, GHZ states and codewords of various error correction codes. The…
We withdraw our paper as the factorizability of the correlation functions is unproven.
This paper has been withdrawn by the authors due to a mistake in one of the proofs
This paper has been withdrawn by the auther due to an error
This paper has been withdrawn by the authors due to a mistake in the proof of Theorem 1.
The paper has been withdrawn due to numerical error.
This paper has been withdrawn by the author due to an error in the derivation.
Paper withdrawn due to error.