Quantumness and Entanglement Witnesses
arXiv:1111.5257 · doi:10.1088/1751-8113/45/10/105302
Abstract
We analyze the recently introduced notion of quantumness witness and compare it to that of entanglement witness. We show that any entanglement witness is also a quantumness witness. We then consider some physically relevant examples and explicitly construct some witnesses.
13 pages, 2 figures
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- Defining quantumness via the Jordan product
- Statistics of projective measurement on a quantum probe as a witness of noncommutativity of algebra of a probed system
- Connecting Commutativity and Classicality for Multi-Time Quantum Processes