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arXiv · 2104.11255

Quantum Energy Lines and the optimal output ergotropy problem

Salvatore Tirone·Raffaele Salvia·Vittorio Giovannetti
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Abstract

We study the transferring of useful energy (work) along a transmission line that allows for partial preservation of quantum coherence. As a figure of merit we adopt the maximum values that ergotropy, total ergotropy, and non-equilibrium free-energy attain at the output of the line for an assigned input energy threshold. For Phase-Invariant Bosonic Gaussian Channels (BGCs) models, we show that coherent inputs are optimal. For (one-mode) not Phase-Invariant BGCs we solve the optimization problem under the extra restriction of Gaussian input signals.

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Salvatore Tirone, Raffaele Salvia, Vittorio Giovannetti. 2021-11-28. Quantum Energy Lines and the optimal output ergotropy problem. https://doi.org/10.1103/physrevlett.127.210601

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