A5034889533- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Atomic and Subatomic Physics Research
- Advanced Fiber Laser Technologies
- Spectroscopy and Laser Applications
- Quantum Mechanics and Applications
- Radioactive Decay and Measurement Techniques
- Dark Matter and Cosmic Phenomena
- Advanced Materials Characterization Techniques
- Mechanical and Optical Resonators
- Laser-induced spectroscopy and plasma
- Quantum, superfluid, helium dynamics
- Geophysics and Sensor Technology
- Planetary Science and Exploration
- Atmospheric and Environmental Gas Dynamics
- Spacecraft Design and Technology
- Quantum optics and atomic interactions
- Semiconductor Lasers and Optical Devices
- Spacecraft and Cryogenic Technologies
- Electrochemical Analysis and Applications
- Atmospheric Ozone and Climate
- Scientific Measurement and Uncertainty Evaluation
- Rocket and propulsion systems research
- Advanced Fiber Optic Sensors
- Experimental and Theoretical Physics Studies
Johannes Gutenberg University Mainz
2016-2024
University of Applied Sciences Mainz
2024
Universität Hamburg
2010-2016
Atom interferometers covering macroscopic domains of space-time are a spectacular manifestation the wave nature matter. Because their unique coherence properties, Bose-Einstein condensates ideal sources for an atom interferometer in extended free fall. In this Letter we report on realization asymmetric Mach-Zehnder operated with condensate microgravity. The resulting interference pattern is similar to one far field double slit and shows linear scaling time packets expand. We employ...
The theory of general relativity describes macroscopic phenomena driven by the influence gravity while quantum mechanics brilliantly accounts for microscopic effects.Despite their tremendous individual success, a complete unification fundamental interactions is missing and remains one most challenging important quests in modern theoretical physics.The STE-QUEST satellite mission, proposed as medium-size mission within Cosmic Vision program European Space Agency (ESA), aims testing with high...
In contrast to light, matter-wave optics of quantum gases deals with interactions even in free space and for ensembles comprising millions atoms. We exploit these a degenerate gas as an adjustable lens coherent atom optics. By combining interaction-driven quadrupole-mode excitation Bose-Einstein condensate (BEC) magnetic lens, we form time-domain system. The focus is tuned by the strength lensing potential oscillatory phase quadrupole mode. placing at infinity, lower total internal kinetic...
We employ light-induced double Bragg diffraction of delta-kick collimated Bose-Einstein condensates to create three symmetric Mach-Zehnder interferometers. They rely on (i) first-order, (ii) two successive and (iii) second-order processes which demonstrate the scalability corresponding momentum transfer. With respect devices based conventional scattering, these interferometers scale factor feature a better suppression noise systematic uncertainties intrinsic process. Moreover, we utilize as...
Microgravity eases several constraints limiting experiments with ultracold and condensed atoms on ground. It enables extended times of flight without suspension eliminates the gravitational sag for trapped atoms. These advantages motivated numerous initiatives to adapt operate experimental setups microgravity platforms. We describe design payload, motivations choices, capabilities Bose-Einstein Condensate Cold Atom Laboratory (BECCAL), a NASA-DLR collaboration. BECCAL builds heritage...
We have developed, assembled, and flight-proven a stable, compact, autonomous extended cavity diode laser (ECDL) system designed for atomic physics experiments in space. To that end, two micro-integrated ECDLs at 766.7 nm were frequency stabilized during sounding rocket flight by means of modulation spectroscopy (FMS) 39^K offset locking techniques based on the beat note ECDLs. The stabilization as well additional hard- software to test hot redundancy mechanisms implemented part...
Operating ultracold quantum gas experiments outside of a laboratory environment has so far been challenging goal, largely due to the lack sufficiently stable optical systems. In order increase thermal stability free-space laser systems, application nonstandard materials such as glass ceramics is required. Here, we report on Zerodur-based systems which include single-mode fiber couplers consisting multiple components jointed by light-curing adhesives. The thoroughly investigated, revealing...
Abstract We report on the design and construction of a sounding rocket payload capable performing atom interferometry with Bose-Einstein condensates $$^{41}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/><mml:mn>41</mml:mn></mml:msup></mml:math> K $$^{87}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/><mml:mn>87</mml:mn></mml:msup></mml:math> Rb. The apparatus is designed to be launched in two consecutive missions VSB-30 qualified...
Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne matter-wave interferometry. Indeed, BECs enjoy slowly expanding wave function, display large spatial coherence and can be engineered probed by optical techniques. On sounding rocket, we explore fringes of multiple spinor components BEC released employing light-pulses to drive Bragg processes induce phase imprinting. The prevailing microgravity played crucial role the observation these interferences...
We present a technique for simultaneous laser frequency stabilization on transitions of multiple atomic species with single optical setup. The method is based modulation transfer spectroscopy, and the signals are separated by modulating at different frequencies electronically filtered. As proof concept, we demonstrate spectroscopy potassium D1, D2 rubidium transitions. can be extended in principle to other given availability optics cells allows development versatile compact reference modules.
Optical frequency comb-based high resolution laser spectroscopy has been demonstrated in space under micro-gravity on two sounding rocket based experiments. The comb used to simultaneously measure different atomic transitions.
We report on a micro-integrated high power diode laser based system for the MAIUS II/III missions. The features fiber coupled and frequency stabilized external cavity lasers (ECDL) cooling, Bose-Einstein condensate (BEC) generation dual species atom interferometry with rubidium potassium board sounding rocket.
We present an optical element for the separation of superimposed beams that only differ in angle. The are angularly resolved and separated by total internal reflection at air gap between two prisms. As a showcase application, we demonstrate different diffraction orders directly behind acousto-optic modulators operating wavelength 800 nm. as well component size can easily be adapted to meet requirements wide variety applications. presented allows one reduce lengths beam paths thus decrease...
A number of cold atom experiments are restrained by the impeding effects gravity.While efforts have been made to overcome these limitations in a gravitational environment, another approach is placing experiment microgravity as can be found aboard sounding rockets, satellites or space station.The cornerstone such robust laser system.The adverse conditions during rocket launch impose stringent requirements on thermal stability and resilience against mechanical stress this part experimental...
We report on the design and construction of a sounding rocket payload capable performing atom interferometry with Bose-Einstein condensates $^{41}$K $^{87}$Rb. The apparatus is designed to be launched in two consecutive missions VSB-30 qualified withstand expected vibrational loads 1.8 g root-mean-square frequency range between 20 - 2000 Hz static during ascent re-entry 25 g. present modular scientific comprising physics package, laser system, an electronics system battery module. A...
Quantum-optical experiments situated in a gravitationally bound experimental setup are fundamentally limited numerous ways, such as the gravitational sag experienced by trapped atoms or free-evolution times of an atomic interferometer.These constraints can be overcome deploying experiment microgravity platform, International Space Station (ISS).The Bose-Einstein Condensate and Cold Atom Laboratory (BECCAL), collaboration between NASA DLR successor to NASA's CAL mission, aims achieve just...