Generating quantum dissonance via local operations

• URL: http://arxiv.org/abs/2405.08568v2
• Date: Mon, 12 Aug 2024 10:52:09 GMT
• Title: Generating quantum dissonance via local operations
• Authors: Gökhan Torun,
• Abstract summary: Quantum dissonance refers to how quantum discord appears as a non-classical correlation in a system without entanglement. We propose two explicit procedures for obtaining separable Werner states, a type of mixed state with nonzero QD.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Correlations may arise in quantum systems through various means, of which the most remarkable one is quantum entanglement. Additionally, there are systems that exhibit non-classical correlations even in the absence of entanglement. Quantum dissonance refers to how quantum discord (QD) -- the difference between the total correlation and the classical correlation in a given quantum state -- appears as a non-classical correlation in a system without entanglement. It could be said that QD has the potential to provide a more inclusive viewpoint for discerning the non-classical correlations. In this work, we address the problem of manipulating the QD between two subsystems through local operations. We propose two explicit procedures for obtaining separable Werner states, a type of mixed state with nonzero QD. Both approaches involve performing local operations on classically correlated states and offers a step-by-step method for obtaining separable Werner states with nonzero discord, providing an alternative (explicit and user-friendly) to existing methods.

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