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Entanglement Theory Quantum Correlations
Entanglement, discord and the power of quantum computation
arXiv
Authors: Aharon Brodutch, Daniel R. Terno
Year
2010
Paper ID
11288
Status
Preprint
Abstract Read
~2 min
Abstract Words
90
Citations
N/A
Abstract
We show that the ability to create entanglement is necessary for execution of bipartite quantum gates even when they are applied to unentangled states and create no entanglement. Starting with a simple example we demonstrate that to execute such a gate bi-locally the local operations and classical communications (LOCC) should be supplemented by shared entanglement. Our results point to the changes in quantum discord, which is a measure of quantumness of correlations even in the absence of entanglement, as the indicator of failure of a LOCC implementation of the gates.
Why This Paper Matters
- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
- It adds a 2010 reference point for readers tracking recent quantum research.
- We show that the ability to create entanglement is necessary for execution of bipartite quantum gates even when they are applied to unentangled states and create no entanglement.
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