BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-6958 DTSTART:20220517T150000Z DTEND:20220518T040000Z DTSTAMP:20260414T113416Z LAST-MODIFIED:20220516T213010Z LOCATION:for full info: https://pme.uchicago.edu/event/pme-distinguish ed-colloquium-series-seminar-dr-prof-ernst-maria-rasel SUMMARY:Exploring quantum gases for space-borne and terrestrial interf erometry\, Wisconsin Quantum Institute\, Ernst Maria Rasel\, Leibniz U niversität Hannover\, Institute of Quantum Optics\, Germany DESCRIPTION:Ultra-cold quantum gases in space promise to boost the sen sitivity of inertial matter-wave interferometers\, on ground they prom ise better accuracies. Applications of these sensors extend from funda mental physics over the use in navigation to interdisciplinary applica tions such as geodesy\, e.g. satellite gravimetry. Exploiting quantum gases for high-precision interferometry places high demands on their c ontrol and manipulation. We take benefit of various microgravity platf orms such as the Bremen drop tower\, the Einstein elevator in Hannover \, sounding rockets\, and the international space station to advance t he necessary methods. The DLR-mission MAIUS-1 demonstrated Bose-Einste in condensation and performed first interferometry experiments during the space travel of a sounding rocket. NASA’s Cold Atom Laboratory c ontinues this research in orbit on the ISS.
\nStarting from a rubi dium Bose-Einstein condensate\, recently lowest expansion energies hav e been achieved by us in the Bremen drop tower as required for extendi ng atom interferometry over several seconds. Exploring these methods t o quantum mixtures not only opens up new physics in the absence of buo yancy\, but also adds challenges for exploiting these mixtures for int erferometry. Interferometers based on two different chemical elements have been proposed for quantum tests of the equivalence principle on t he ISS as well as on satellites. Currently\, we prepare a sounding roc ket mission to investigate the simultaneous generation and manipulatio n of potassium and rubidium condensates. Together with CAL\, these exp eriments will prepare the DLR-NASA multi-user facility BECCAL for rese arch on quantum gas mixtures and interferometry as well as enhance the readiness level of methods required for STE-QUEST\, a proposal for a satellite mission currently studied within ESA’s VOYAGE 2050 program . URL:https://www.physics.wisc.edu/events/?id=6958 END:VEVENT END:VCALENDAR