A5084957235- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Quantum optics and atomic interactions
- Silicon and Solar Cell Technologies
- Additive Manufacturing and 3D Printing Technologies
- Optical properties and cooling technologies in crystalline materials
- Phase-change materials and chalcogenides
- Plant nutrient uptake and metabolism
- Magnetic properties of thin films
- Photovoltaic System Optimization Techniques
- Electronic and Structural Properties of Oxides
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Transition Metal Oxide Nanomaterials
- Plant responses to water stress
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Quantum Information and Cryptography
- Lipid metabolism and biosynthesis
- Laser Design and Applications
Ferdinand-Braun-Institut
2019-2024
Kirchhoff (Germany)
2024
Humboldt-Universität zu Berlin
2017-2024
Ambulatory Rehabilitation Center Berlin Adlershof
2024
Freie Universität Berlin
2015
Monsanto (United States)
1976
Jet Propulsion Laboratory
1976
United States Department of Commerce
1976
Plants lack specialised organs and circulatory systems, oxygen can fall to low concentrations in metabolically active, dense or bulky tissues. In animals that tolerate hypoxia anoxia, triggers an adaptive inhibition of respiration metabolic activity. Growing potato tubers were used investigate whether analogous response exists plants. Oxygen below 5% the centre growing tubers. This is accompanied by a decrease adenylate energy status, alterations metabolites are indicative decreased rate...
Employing spin-, time-, and energy-resolved photoemission spectroscopy, we present the first study on spin polarization of a single electronic state after ultrafast optical excitation. Our investigation concentrates majority-spin component d-band-derived Gd(0001) surface d(z(2))(↑). While its binding energy shows rapid Stoner-like shift by 90 meV with an exponential time constant τ(E)=0.6±0.1 ps, d(z(2))(↑) remains nearly within picoseconds decays τ(S)=15±8 ps. This behavior is in clear...
Abstract Quantum technologies are advancing from fundamental research in specialized laboratories to practical applications the field, driving demand for robust, scalable, and reproducible system integration techniques. Ceramic components can be pivotal thanks high stiffness, low thermal expansion, excellent dimensional stability under stress. Lithography‐based additive manufacturing of technical ceramics is explored, especially miniaturized physics packages electro‐optical systems. This...
Cold atom based quantum sensors require robust and miniaturized optical systems for applications on mobile platforms. A micro-integrated system (volume ∼25 mL) trapping manipulation of neutral atoms is presented. This setup focuses precisely overlaps two high power laser beams (1064 nm, up to 2W total, wR = 34 µm) launched via a single-mode, polarization maintaining fiber, thereby realizing crossed beam dipole trap (ODT). Adhesive bonding qualified in application relevant geometries material...
Quantum technologies are advancing from fundamental research in specialized laboratories to practical applications the field, driving demand for robust, scalable, and reproducible system integration techniques. Ceramic components can be pivotal thanks high stiffness, low thermal expansion, excellent dimensional stability under stress. We explore lithography-based additive manufacturing of technical ceramics especially miniaturized physics packages electro-optical systems. This approach...
Quantum technologies extensively use laser light for state preparation, manipulation, and readout. For field applications, these systems must be robust compact, driving the need miniaturized highly stable optical setups system integration. In this work, we present a micro-integrated crossed-beam dipole trap setup, $\mu$XODT, designed trapping cooling $^{87}\text{Rb}$. This fiber-coupled setup operates at $1064\,\text{nm}$ wavelength with up to $2.5\,\text{W}$ power realizes free-space...
Quantum technologies extensively use laser light for state preparation, manipulation, and readout. For field applications, these systems must be robust compact, driving the need miniaturized highly stable optical setups system integration. In this work, we present a micro-integrated crossed-beam dipole trap setup, µXODT, designed trapping cooling 87 Rb. This fiber-coupled setup operates at 1064 nm wavelength with up to 2.5 W power realizes free-space crossed beam geometry. The µXODT...
Reliable long-term operation of integrated quantum sensors employing atom interferometry in space imposes challenging requirements on the utilized technology and materials. In last decade, progress miniaturization each experimental subsystem (e.g., vacuum chamber with source, laser system optics) greatly benefited from chip [1], micro diode modules [2] compact optical bench setups [3], developed context QUANTUS LASUS collaborations.
Cold atomic quantum sensors rely on the generation, manipulation, and detection of gases are well proven within laboratory environments. For many applications in areas sensing, timekeeping fundamental physics, these setups need to be realized as mobile field compatible, miniaturized devices. However, this is still a major technological challenge.
We present a tool for rapid prototyping and qualification of (electro-) optical components adhesive integration techniques micro-integrated assemblies operating in ultra-high vacuum environments.
Employing compact quantum sensors in field or space (e.g., small satellites) implies demanding requirements on components and integration technologies. Within our work integrated sensors, we develop miniaturized, ultra-stable optical setups for cooling trapping of cold atomic gases. Besides challenging demands alignment precision, thermo-mechanical durability, specifically address ultra-high vacuum (UHV) compatibility technologies components. A prototype design an UHV-compatible, crossed...
While generation, manipulation, and detection of atomic quantum states in ultra-cold matter is well established within laboratory environments, the transfer these techniques into field-compatible, miniaturized user-friendly devices remains a major technological challenge. If are overcome, pioneering applications areas sensing, timekeeping fundamental physics can be realized.