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Transforming graph states to Bell-pairs is NP-Complete

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Axel Dahlberg, Jonas Helsen, and Stephanie Wehner

QuTech – TU Delft, Lorentzweg 1, 2628CJ Delft, The Netherlands

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Abstract

Critical to the construction of large scale quantum networks, i.e. a quantum internet, is the development of fast algorithms for managing entanglement present in the network. One fundamental building block for a quantum internet is the distribution of Bell pairs between distant nodes in the network. Here we focus on the problem of transforming multipartite entangled states into the tensor product of bipartite Bell pairs between specific nodes using only a certain class of local operations and classical communication. In particular we study the problem of deciding whether a given graph state, and in general a stabilizer state, can be transformed into a set of Bell pairs on specific vertices using only single-qubit Clifford operations, single-qubit Pauli measurements and classical communication. We prove that this problem is ${mathbb{NP}}$-Complete.

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Cited by

[1] Axel Dahlberg, Jonas Helsen, and Stephanie Wehner, “Counting single-qubit Clifford equivalent graph states is #P -complete”, Journal of Mathematical Physics 61 2, 022202 (2020).

The above citations are from SAO/NASA ADS (last updated successfully 2020-10-26 03:05:50). The list may be incomplete as not all publishers provide suitable and complete citation data.

On Crossref’s cited-by service no data on citing works was found (last attempt 2020-10-26 03:05:49).

Source: https://quantum-journal.org/papers/q-2020-10-22-348/

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