Auflistung nach Schlagwort "Ions"

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  • Miniaturized high-performance drift tube ion mobility spectrometer 
    Ahrens, André; Hitzemann, Moritz; Zimmermann, Stefan (Heidelberg : Springer Verlag, 2019)
    Developing powerful hand-held drift tube ion mobility spectrometers (IMS) requires small, lightweight drift tubes with high analytical performance. In this work, we present an easy-to-manufacture, miniaturized drift tube ...
  • Modelling Water Transport Limitations and Ionic Voltage Losses in Bipolar Membrane Water Electrolysis 
    Weiland, Oskar; Trinke, Patrick; Bensmann, Boris; Hanke-Rauschenbach, Richard (Bristol : IOP Publishing, 2023)
    This work analyses the water transport and ionic losses in bipolar membranes at water electrolysis cells conditions. In common bipolar setups, water is split at the bipolar interface between the anion exchange membrane ...
  • Multilayer ion trap technology for scalable quantum computing and quantum simulation 
    Bautista-Salvador, A.; Zarantonello, G.; Hahn, H.; Preciado-Grijalva, A.; Morgner, J.; Wahnschaffe, M.; Ospelkaus, C. (Bristol : Institute of Physics Publishing, 2019)
    We present a novel ion trap fabrication method enabling the realization of multilayer ion traps scalable to an in principle arbitrary number of metal-dielectric levels. We benchmark our method by fabricating a multilayer ...
  • Multiple scale modeling of Al2O3 thin film growth in an ion beam sputtering process 
    Turowski, Marcus; Jupé, Marco; Melzig, Thomas; Pflug, Andreas; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    A multiple scale model approach is presented in order to investigate Al2O3 thin film growth in the framework of an existing Ion Beam Sputtering (IBS) coating process. Therefore, several simulation techniques are combined ...
  • Novel ion drift tube for high-performance ion mobility spectrometers based on a composite material 
    Ahrens, André; Möhle, Janina; Hitzemann, Moritz; Zimmermann, Stefan (Berlin : Springer, 2020)
    Ion mobility spectrometers (IMS) are able to detect pptV-level concentrations of substances in gasses and in liquids within seconds. Due to the continuous increase in analytical performance and reduction of the instrument ...
  • Optical Trapping of Ion Coulomb Crystals 
    Schmidt, Julian; Lambrecht, Alexander; Weckesser, Pascal; Debatin, Markus; Karpa, Leon; Schaetz, Tobias (College Park, Md. : APS, 2018)
    The electronic and motional degrees of freedom of trapped ions can be controlled and coherently coupled on the level of individual quanta. Assembling complex quantum systems ion by ion while keeping this unique level of ...
  • Optimization of novel phase separating IBS process 
    Jupé, Marco; Willemsen, Thomas; Malobabic, Sina; Schuba, Kornelia; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    During the last years, optical low loss components gained more and more industrial interest and led to novel approaches for the production in optical coating technology. The application of filtered deposition technologies ...
  • The origin of isomerization of aniline revealed by high kinetic energy ion mobility spectrometry (HiKE-IMS) 
    Naylor, Cameron N.; Schaefer, Christoph; Kirk, Ansgar T.; Zimmermann, Stefan (Cambridge : RSC Publ., 2022)
    Although aniline is a relatively simple small molecule, the origin of its two peaks observed in ion mobility spectrometry (IMS) has remained under debate for at least 30 years. First hypothesized as a difference in protonation ...
  • Penning micro-trap for quantum computing 
    Jain, Shreyans; Sägesser, Tobias; Hrmo, Pavel; Torkzaban, Celeste; Stadler, Martin; Oswald, Robin; Axline, Chris; Bautista-Salvador, Amado; Ospelkaus, Christian; Kienzler, Daniel; Home, Jonathan (London [u.a.] : Nature Publ. Group, 2024)
    Trapped ions in radio-frequency traps are among the leading approaches for realizing quantum computers, because of high-fidelity quantum gates and long coherence times1–3. However, the use of radio-frequencies presents ...
  • Plate-height model of ion mobility-mass spectrometry 
    Grabarics, Márkó; Lettow, Maike; Kirk, Ansgar T.; von Helden, Gert; Causon, Tim J.; Pagel, Kevin (Cambridge : Soc., 2020)
    In the past decade, ion mobility spectrometry (IMS) in combination with mass spectrometry (IM-MS) became a widely employed technique for the separation and structural characterization of ionic species in the gas phase. ...
  • Precision Isotope Shift Measurements in Calcium Ions Using Quantum Logic Detection Schemes 
    Gebert, Florian; Wan, Yong; Wolf, Fabian; Angstmann, Christopher N.; Berengut, Julian C.; Schmidt, Piet O. (College Park, MD : American Physical Society, 2015)
    We demonstrate an efficient high-precision optical spectroscopy technique for single trapped ions with nonclosed transitions. In a double-shelving technique, the absorption of a single photon is first amplified to several ...
  • Quantitative information in decay curves obtained with a pulsed ion mobility spectrometer 
    Baether, Wolfgang; Zimmermann, Stefan; Gunzer, Frank (Cambridge : Royal Society of Chemistry, 2012)
    Ion mobility spectrometry (IMS) is well known for its very high sensitivity, and thus IMS spectra are commonly used in the identification of trace gases. Extracting quantitative information from IMS spectra is, in contrast, ...
  • Quantum Algorithmic Readout in Multi-Ion Clocks 
    Schulte, M.; Lörch, N.; Leroux, I.D.; Schmidt, Piet O.; Hammerer, K. (College Park, MD : American Physical Society, 2016)
    Optical clocks based on ensembles of trapped ions promise record frequency accuracy with good short-term stability. Most suitable ion species lack closed transitions, so the clock signal must be read out indirectly by ...
  • Rapid Low-Dimensional Li+Ion Hopping Processes in Synthetic Hectorite-Type Li0.5[Mg2.5Li0.5]Si4O10F2 
    Hiebl, Caroline; Loch, Patrick; Brinek, Marina; Gombotz, Maria; Gadermaier, Bernhard; Heitjans, Paul; Breu, Josef; Wilkening, H. Martin R. (Washington, DC : American Chemical Society, 2020)
    Understanding the origins of fast ion transport in solids is important to develop new ionic conductors for batteries and sensors. Nature offers a rich assortment of rather inspiring structures to elucidate these origins. ...
  • Robust optical clock transitions in trapped ions using dynamical decoupling 
    Aharon, Nati; Spethmann, Nicolas; Leroux, Ian D.; Schmidt, Piet O.; Retzker, Alex (Bristol : Institute of Physics Publishing, 2019)
    We present a novel method for engineering an optical clock transition that is robust agaiast external field fluctuations and is able to overcome limits resulting from field inhomogeneities. The technique is based on the ...
  • Simulating open quantum systems: From many-body interactions to stabilizer pumping 
    Müller, M.; Hammerer, Klemens; Zhou, Y.L.; Roos, C.F.; Zoller, P. (Bristol : IOP Publishing Ltd., 2011)
    In a recent experiment, Barreiro et al (2011 Nature 470 486) demonstrated the fundamental building blocks of an open-system quantum simulator with trapped ions. Using up to five ions, dynamics were realized by sequences ...
  • Sympathetic cooling of mixed-species two-ion crystals for precision spectroscopy 
    Wübbena, Jannes B.; Amairi, Sana; Mandel, Olaf; Schmidt, Piet O. (College Park, MD : American Physical Society, 2012)
    Sympathetic cooling of trapped ions has become an indispensable tool for quantum-information processing and precision spectroscopy. In the simplest situation a single Doppler-cooled ion sympathetically cools another ion ...
  • The TRAPSENSOR facility: An open-ring 7 tesla Penning trap for laser-based precision experiments 
    Gutiérrez, Manuel J.; Berrocal, Joaquín; Cornejo, Juan M.; Domínguez, Francisco; Del Pozo, Jesús J.; Arrazola, Iñigo; Bañuelos, Javier; Escobedo, Pablo; Kaleja, Oliver; Lamata, Lucas; Rica, Raúl A.; Schmidt, Stefan; Block, Michael; Solano, Enrique; Rodríguez, Daniel (Bristol : Institute of Physics Publishing, 2019)
    A Penning-trap facility for high-precision mass spectrometry based on a novel detection method has been built. This method consists in measuring motional frequencies of singly-charged ions trapped in strong magnetic fields ...
  • Three Reasons Why Aspartic Acid and Glutamic Acid Sequences Have a Surprisingly Different Influence on Mineralization 
    Lemke, Tobias; Edte, Moritz; Gebauer, Denis; Peter, Christine (Washington, DC : Americal Chemical Society, 2021)
    Understanding the role of polymers rich in aspartic acid (Asp) and glutamic acid (Glu) is the key to gaining precise control over mineralization processes. Despite their chemical similarity, experiments revealed a surprisingly ...
  • Towards a transportable aluminium ion quantum logic optical clock 
    Hannig, Stephan; Pelzer, L.; Scharnhorst, N.; Kramer, J.; Stepanova, M.; Xu, Z.T.; Spethmann, N.; Leroux, I.D.; Mehlstäubler, Tanja E.; Schmidt, Piet O. (American Institute of Physics : [S.l.], 2019)
    With the advent of optical clocks featuring fractional frequency uncertainties on the order of 10-17 and below, new applications such as chronometric leveling with few-centimeter height resolution emerge. We are developing ...