Rostock 2019 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 57: Poster: Quantum Optics and Photonics III

Q 57.16: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik

A three-mode inertial sensor for the measurement of the gravitational acceleration — •Alexander Idel¹, Fabian Anders¹, Polina Feldmann², Jan Peise¹, Luis Santos², and Carsten Klempt¹ — ¹Institut für Quantenoptik, Leibniz Universität Hannover — ²Institut für theoretische Physik, Leibniz Universität Hannover

Atom interferometers can measure the gravitational acceleration by sensing gravitational phase shifts on spatially displaced superposition states. Future large-scale atomic gravimeters will employ Bose-Einstein condensed samples due to their well-controlled spatial mode and the low expansion rates. These gravimeters are fundamentally limited by the Standard Quantum Limit (SQL). The SQL can be overcome by engineering entangled input states for the interferometer. Such entangled states are routinely produced in the spin degree of freedom and concepts for their transfer to the spatial degree of freedom are outstanding. Here, I present an atomic gravimeter that creates superpositions in three spin states and transfers these superpositions to momentum states. The concepts can be employed in the future to demonstrate an atomioc gravimeter beyond the SQL.