Bulletin of the American Physical Society
50th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics APS Meeting
Volume 64, Number 4
Monday–Friday, May 27–31, 2019; Milwaukee, Wisconsin
Session C10: Cold Atoms in Space |
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Chair: Cass Sackett, University of Virginia Room: Wisconsin Center Ballroom A |
Tuesday, May 28, 2019 10:30AM - 11:00AM |
C10.00001: The Coolest Spot in the Universe: A Facility for Cold Atom Experiments Aboard the ISS. Invited Speaker: Rob Thompson Microgravity offers a wealth of advantages for studies of ultra-cold atomic gases and their applications. These include the ability to achieve exceptionally low temperatures via expansion into very weak traps, which don't need to be supported against gravity and the ability to achieve very long interaction times with samples that have been released from traps. In this talk, I present early results from the Cold Atom Laboratory (CAL) a multi-user ultra-cold atom facility that will enable the precise study of quantum gases in a regime that is inaccessible on Earth. [Preview Abstract] |
Tuesday, May 28, 2019 11:00AM - 11:30AM |
C10.00002: Space-borne matter-wave interferences Invited Speaker: Ernst Rasel Bose-Einstein condensation (BEC)was awarded with the Nobel prize only 18 years ago. At that time one only could "speculate on areas for the application of BEC. The new "control" of matter which this technology involves is going to bring revolutionary applications in such fields as precision measurement and nanotechnology." Today BEC interferometry is a cornerstone for applications of cold atoms on ground and in space and represents a new field in matter wave optics. These interferometers strive to increase the sensitivity by coherently spitting and separating wave packets over macroscopic spatial and temporal scales. Bose-Einstein condensates (BECs), representing a textbook example for a macroscopic wave packet, are the ideal source for performing this kind of interferometry in very long baseline interferometers stretching out over seconds on ground and during even longer interferometry times in space. , BEC interferometry was exploited for the first time in the extended free fall with a chip-based atom laser for Rubidium 87Rb in the QUANTUS collaboration. The design was successfully employed for a rocket based test of such an BEC interferometer. In the talk, I will present the first interferometry experiments performed on the sounding rocket mission MAIUS-1 in space. The experiment pave the way for future space experiments by NASA's CAL II and the envisioned DLR-NASA project of "BECCAL", a multi-user facility for experiments on quantum matter, quantum optics and BEC interferometry. Among others, they will demonstrate important techniques necessary for satellite based quantum tests of Einsteins principle of equivalence as pursued by the STE-QUEST mission, for satellite gravimetry and future gravitational wave detection based on ultracold atoms.QUANTUS cooperation comprises the group of C. L\"{a}mmerzahl (Univ. Bremen), A. Peters (Humboldt Univ. Berlin/Ferdinand Braun Institut), T. H\"{a}nsch/J.Reichel (MPQ/ENS), K. Sengstock/P. Windpassinger (Univ. Hamburg/Univ. Mainz), R. Walser (TU Darmstadt), and W.P. Schleich (Univ. Ulm). project is supported by the German Space Agency Deutsches Zentrum f\"{u}r Luft- und Raumfahrt (DLR) with funds provided by the Federal Ministry of Economics and Technology (BMWI) under grant number DLR 50 WM 0346. We thank the German Research Foundation for funding the Cluster of Excellence QUEST Centre for Quantum Engineering and Space-Time Research. [Preview Abstract] |
Tuesday, May 28, 2019 11:30AM - 12:00PM |
C10.00003: MAGIS-100 and Large Momentum Transfer Clock Atom Interferometry in Strontium Invited Speaker: Jason Hogan I will discuss MAGIS-100, a new 100-meter tall atomic sensor being constructed at Fermilab. MAGIS-100 will serve as a prototype for proposed space-based atomic detectors that target gravitational waves in a frequency band complementary to existing detectors (0.03 Hz – 3 Hz), the optimal frequency range to support multi-messenger astronomy. MAGIS-100 will also be sensitive to proposed ultra-light dark matter (scalar and vector couplings) at unprecedented levels, and is expected to allow new demonstrations of quantum mechanics over meter-scale wavepacket separation and long coherence times. In pursuit of these goals, I will also present recent efforts towards increasing the sensitivity of atom interferometers through the use of narrow-line clock transitions in alkaline earth atoms such as strontium. These narrow-line transitions hold promise to circumvent some constraints in conventional atom interferometers, enabling potentially increased sensitivity through large momentum transfer (LMT) atom optics and reduced susceptibility to laser phase noise in a gradiometer configuration. I will show recent results on LMT interferometry on the 689 nm intercombination line of strontium, which demonstrate for the first time an LMT interferometer based on sequential single-photon transitions, a critical requirement for MAGIS-100 and generally for gravitational wave detection using clock atoms. [Preview Abstract] |
Tuesday, May 28, 2019 12:00PM - 12:30PM |
C10.00004: The Consortium for Ultra Cold Atoms in Space. Invited Speaker: Nicholas Bigelow Starting in the mid 1990s NASA began supporting the scientific community's interest in experimental research with cold atoms in Space. In its early phases, this \textit{Fundamental Physics} program included development of precision experimental tools to enable space-based research using atomic clocks, searches for the permanent dipole moment of the electron, and a space-based system for creating and investigating Bose-Einstein condensates. Following the release in 2011 of the NRC decadal report ``Recapturing a Future for Space Exploration,'' NASA's effort to support the goal of experimental cold atom research in space, and specifically aboard the International Space Station (ISS), accelerated rapidly. One result of this accelerated effort was the installation of the Cold Atom Laboratory (CAL) aboard the ISS. In 2018 space-based Bose-Einstein condensates were successfully created using CAL. In the second half of 2018, investigator driven experiments using the Cold Atom Laboratory (CAL) began. In this talk I will review some of this history and its motivation and I will present recent experimental cold atom data created using CAL aboard ISS. [Preview Abstract] |
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