Quantum Energy Lines and the optimal output ergotropy problem
Join us online on Wednesday, November 24th at 14:00 CET (13:00 GMT) for an ICTQT seminar
- Speaker: Salvatore Tirone (Scuola Normale Superiore, Italy)
- Title: Quantum Energy Lines and the optimal output ergotropy problem
- Zoom link
We study the possibility of conveying useful energy (work) along a transmission line that allows for a 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. When the system can be modelled in terms of Phase-Invariant Bosonic Gaussian Channels (BGCs), we show that coherent inputs are optimal. For generic BGCs which are not Phase-Invariant the problem becomes more complex and coherent inputs are no longer optimal. In this case, focusing on one-mode channels, we solve the optimization problem under the extra restriction of Gaussian input signals.
This talk is based on https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.210601.