"Strong local passivity is a property of multipartite systems from which it is impossible to locally extract energy. Surprisingly, if the system in a strong local passive state displays entanglement, it could be possible to locally activate energy by adding classical communication between different partitions of the system, through so-called ‘quantum energy teleportation’ protocols.
In this talk, first, I will present how to fully characterize this distinct notion of local passivity by giving necessary and sufficient conditions using optimization techniques from semidefinite programming [1]. Then, I will introduce the minimal theoretical model of energy activation with a fully unitary quantum energy teleportation protocol [2]. Finally, I will present the first experimental observation of the local activation of a strong local passive state on a bipartite quantum system using nuclear magnetic resonance [2].
Refs.
[1] Fundamental limitations to local energy extraction in quantum systems. ÁM Alhambra, G Styliaris, NA Rodriguez-Briones, J Sikora, E Martin-Martinez. Physical review letters 123 19, 190601
[2] Experimental activation of strong local passive states with quantum information. NA Rodríguez-Briones, H Katiyar, R Laflamme, E Martín-Martínez. ArXiv preprint arXiv:2203.16269"