AI Article Synopsis
- The text discusses how collective quantum resources can enhance the efficiency of quantum batteries (QBs) by using a model involving multiple two-level systems connected to a single photonic mode.
- It compares this "Dicke QB" model, where entanglement arises from a shared photonic mode, to the "Rabi QB" model, where each system is linked to its own separate mode.
- The researchers show that Dicke QBs exhibit a quantum advantage in charging power that increases with the number of systems, specifically scaling like the square root of N when N is large.
Article Abstract
Quantum information theorems state that it is possible to exploit collective quantum resources to greatly enhance the charging power of quantum batteries (QBs) made of many identical elementary units. We here present and solve a model of a QB that can be engineered in solid-state architectures. It consists of N two-level systems coupled to a single photonic mode in a cavity. We contrast this collective model ("Dicke QB"), whereby entanglement is genuinely created by the common photonic mode, to the one in which each two-level system is coupled to its own separate cavity mode ("Rabi QB"). By employing exact diagonalization, we demonstrate the emergence of a quantum advantage in the charging power of Dicke QBs, which scales like sqrt[N] for N≫1.
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| http://dx.doi.org/10.1103/PhysRevLett.120.117702 | DOI Listing |
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