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Micromanipulation of intern-extern degrees of freedom of mesoscopic atomic ensembles

Obiettivo

During the last few years, atom chips have been successfully developed for experimental studies on mesoscopic ensembles of ultracold atoms. They consist in surface-mounted microstructures (among several µm to 100 nm), which allow the generation of the fields, required for confining and cooling of neutral atoms. Bose Einstein condensation of alkalis, like Rb87, is optimally achieved with such chips.

The theme of this project is the development and construction of the next generation atom chip. Recent experiments on an atom chip have demonstrated a phase preserving matter wave interferometer based upon radiofrequency-induced (several hundred kHz) adiabatic potentials.

However, in order to control and manipulate the hyperfine degrees of freedom (F = 1,2) of t he Rb87 ground state, electromagnetic fields with frequencies of several GHz are necessary. The first part of this project will be the design of new generation atom chips containing microwave circuits, which will enable the interaction of the atoms with t he near microwave fields. The adiabatic RF induced potentials will render new trapping geometries possible.

The same technique will be extended to the Microwave regime, enabling the production of state-dependent potentials, which is essential for possible implementation of quantum computation in atom chips. Within the project, complex atom chips will be developed and fabricated. They will be mounted in an existing set-up for housing atom chips at the Host institution and experiments on the manipulation of all degrees of freedom of Rubidium will be performed with the mentioned techniques.

By means of interferometry experiments, the coherence of mesoscopic ensembles of atoms close to the chip surface will be investigated. Moreover, the coupling of the atoms t o a microwave resonator on the chip will be experimentally investigated. This might lead to a new not optical detection scheme of the atoms.

Campo scientifico (EuroSciVoc)

Parole chiave

Argomento(i)

Invito a presentare proposte

FP6-2005-MOBILITY-5
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Meccanismo di finanziamento

EIF - Marie Curie actions-Intra-European Fellowships

Coordinatore

TECHNISCHE UNIVERSITÄT WIEN
Contributo UE
Nessun dato
Costo totale
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