Quantum network-entanglement measures
- URL: http://arxiv.org/abs/2311.13945v1
- Date: Thu, 23 Nov 2023 11:50:09 GMT
- Title: Quantum network-entanglement measures
- Authors: Zhen-Peng Xu, Julio I. de Vicente, Liang-Liang Sun and Sixia Yu
- Abstract summary: We introduce measures of quantum network-entanglement that are well-defined within the general framework of quantum resource theories.
We also provide device-dependent and device-independent methods to estimate these measures.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum networks are of high interest nowadays and a quantum internet has
been long envisioned. Network-entanglement adapts the notion of entanglement to
the network scenario and network-entangled states are considered to be a
resource to overcome the limitations of a given network structure. In this work
we introduce measures of quantum network-entanglement that are well-defined
within the general framework of quantum resource theories, which at the same
time have a clear operational interpretation characterizing the extra resources
necessary to prepare a targeted quantum state within a given network. In
particular, we define the network communication cost and the network round
complexity, which turn out to be intimately related to graph-theoretic
parameters. We also provide device-dependent and device-independent methods to
estimate these measures.
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