General quantum resources providing advantages in work-extraction tasks

Abstract:In developing quantum science and technologies, it is essential to demonstrate so-called quantum advantages, which are performances that can be achieved only with the assistance of quantum resources. Most of the time, different quantum features lead to different advantages. Interestingly, there are certain classes of tasks where quantum advantages are achievable by general quantum resources. This work reports such a class of tasks in thermodynamics---we provide a work-extraction task that certifies general quantum resources of both states and channels, suggesting general quantum effects can provide non-classical advantages in work extraction. We also show that such work-extraction tasks can be applied to certify quantum entanglement in a one-sided device-independent way. As an application, we report a novel type of anomalous energy flow---a type of locally extractable energy that is attributed to the globally distributed entanglement. Finally, we show that the existence of this novel anomalous energy flow is equivalent to measurement incompatibility.

12 pages, closed to published version, companion paper of arXiv:2510.20366

arXiv:2403.18753 [quant-ph]

(or arXiv:2403.18753v3 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2403.18753 Focus to learn more arXiv-issued DOI via DataCite

Phys. Rev. A 114, 022456 (2026)

https://doi.org/10.1103/p5mg-s3dw Focus to learn more DOI(s) linking to related resources

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