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arXiv · 1101.1671

Entanglement resonances of driven multi-partite quantum systems

Simeon Sauer·Florian Mintert·Clemens Gneiting·Andreas Buchleitner
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Abstract

We show how to create maximally entangled dressed states of a weakly interacting multi-partite quantum system by suitably tuning an external, periodic driving field. Floquet theory allows us to relate, in a transparent manner, the occurrence of entanglement resonances to avoided crossings in the spectrum of quasi-energies, tantamount of well-defined conditions for the controlled, resonant interaction of particles. We demonstrate the universality of the phenomenon for periodically driven, weakly interacting two-level systems, by considering different interaction mechanisms and driving profiles. In particular, we show that entanglement resonances are a generic feature of driven, multi-partite systems, widely independent of the details of the interaction mechanism. Our results are therefore particularly relevant for experiments on interacting two-level systems, in which the microscopic realization of the inter-particle coupling is unknown.

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Simeon Sauer, Florian Mintert, Clemens Gneiting, Andreas Buchleitner. 2011-01-09. Entanglement resonances of driven multi-partite quantum systems. https://doi.org/10.1088/0953-4075/45/15/154011

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