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Expanding operating regimes of trapped ions for quantum technologies


Trapped ions manipulated by electromagnetic radiation fields constitute now one of the most developed quantum technologies. Scenarios range from "benchtop" experiments to on-chip integration with the prospect of use in portable systems. Within the scope of quantum technologies, the operation of these systems has taken place in the so-called resolved sideband regime. This regime allows access to effective dynamics that have been explored in the most different applications. However, for the system to operate in this regime, some prerequisites are necessary, including the use of weak external fields compared to the energy of the vibrational movement. Currently, however, certain trapped ion systems for integrating material qubits and propagating photons make use of intense fields compared to the trap frequency. Its description, therefore, can not be given within the scope of resolved sidebands. Furthermore, obtaining the resolved sideband regime requires a highly stable optical system, which makes the experiment expensive. Keeping these factors in mind, this project is dedicated to modeling and proposition of applications with trapped ions beyond the resolved sideband regime. The methodology consists of the use of unitary transformations that evidence other resonance regimes that expand what we currently know, that is, the resolved sideband regime. Applications in the field of ion-photon transduction and the investigation of energy transfers between ions, fields and their environment will illustrate the physics of these new regimes. (AU)

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(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TASSIS, T.; SEMIAO, F. L.. Trapped ions beyond carrier and sideband interactions. HYSICAL REVIEW, v. 107, n. 4, p. 9-pg., . (21/14135-1)

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