Accurate atom counting for entanglement-enhanced atom interferometry

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dc.identifier.uri Hüper, Andreas ger 2020-05-19T09:00:13Z 2020-05-19T09:00:13Z 2020
dc.identifier.citation Hüper, Andreas: Accurate atom counting for entanglement-enhanced atom interferometry. Hannover : Gottfried Wilhelm Leibniz Universität, Diss., 2019, iv, 128 S. DOI: ger
dc.description.abstract Atom interferometers belong among today's most precise sensors and offer a broad range of possible metrological applications. Given their ability to measure accelerations and rotations precisely, they are suitable for inertial sensing, navigation and geodesy. Beyond this, they proved indispensible for time-keeping as well as fundamental research. This explains why the improvement of achievable sensitivities of atom interferometers is of particular interest. However the sensitivity of atom interferometers is fundamentally restricted by the standard quantum limit. The standard quantum limit can only be surpassed by employing entangled many-partice states. Entangled states, such as the twin-Fock state, allow atom interferometers to improve the phase sensitivity beyond the standard quantum limit, but they are reliant on an accurate detection of the interferometric out come. In this work, an experimental apparatus is designed and set up that will allow for routine generation of highly entangled twin-Fock states in a Rubidium-87 spinor Bose-Einstein condensate. As the main feature of this apparatus, an accurate atom counting fluorescence detection has been implemented. This detection achieves single-particle resolving fluorescence measurements for 1 up to 30 atoms. According to the noise analysis the single-atom resolution extends to a limiting atom number of 390(20) atoms. The implemented quadrupole coils with their strong gradient of up to 300 G/cm offer a tight confinement that in combination with the 55 W optical dipole trap laser will enable a fast repetition rate of the creation of highly entangled quantum states. ger
dc.language.iso eng ger
dc.publisher Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
dc.rights CC BY 3.0 DE ger
dc.rights.uri ger
dc.subject accurate atom counting eng
dc.subject entanglement-enhanced atom interferometry eng
dc.subject single-atom resolution eng
dc.subject Einzelatomauflösung ger
dc.subject verschränkungsverstärkte Atominterferometrie ger
dc.subject Akkurates Atomzählen ger
dc.subject.ddc 530 | Physik ger
dc.title Accurate atom counting for entanglement-enhanced atom interferometry ger
dc.type DoctoralThesis ger
dc.type Text ger
dcterms.extent iv, 128 S.
dc.description.version publishedVersion ger
tib.accessRights frei zug�nglich ger

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