Extractable energy from quantum superposition of current states

• URL: http://arxiv.org/abs/2410.13934v1
• Date: Thu, 17 Oct 2024 18:00:02 GMT
• Title: Extractable energy from quantum superposition of current states
• Authors: Francesco Perciavalle, Davide Rossini, Juan Polo, Luigi Amico,
• Abstract summary: We prove that superpositions of two current states in spatially closed spin networks are characterized by specific peaks in extractable energy. The many-body state dynamics entails to ergotropy evolving in a controlled fashion. The implementation we suggest is based on a Rydberg-atom platform.
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• Abstract: We explore the energy content of superpositions of current states. Specifically, we focus on the maximum energy that can be extracted from them through local unitary transformations. The figure of merit we employ is the local ergotropy. We perform a complete analysis in the whole range of the system's parameters. This way, we prove that superpositions of two current states in spatially closed spin networks are characterized by specific peaks in extractable energy, generally overcoming the power of each of the two separate current states characterized by a single winding number. The many-body state dynamics entails to ergotropy evolving in a controlled fashion. The implementation we suggest is based on a Rydberg-atom platform. Optimal transformations able to extract locally the maximum possible amount of energy are sorted out.

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