Ulrich Warring
Wissenschaftlicher Mitarbeiter
Gustav-Mie-Haus; Zimmer: 04 017
T 7645
+49 761 203
E ulrich.warring
[at] physik.uni-freiburg.de
Forschung:
Paula |
Bermuda |
DiamondOne |
Lehre:
- Fortgeschrittenen Praktikum für B.Sc. und M.Sc. Studiengang (link)
- Praktikumsversuch für angewandten M.Sc. Studiengang (link)
- Atomic Physics: From Nobel Prizes to Applications – Term Paper of the M.Sc. Physics and Applied Physics – Winter 2021/2022 (link)
- Aufzucht von Schrödinger's Kätzchen: Vom Gedankenexperiment zur vollen Quantenkontrolle von einzelnen Atomen – Seminar für B.Sc. – Sommer 2020 (link)
Publikationen:
- A. Colla, F. Hasse, D. Palani, T. Schaetz, H.-P. Breuer, U. Warring, Observing Time-Dependent Energy Level Renormalisation in an Ultrastrongly Coupled Open System, Nat. Commun. 16, 2502 (2025) – https://arxiv.org/abs/2408.15928
- F. Hasse, D. Palani, R.Thomm, U. Warring, T. Schaetz, Phase-Stable Traveling Waves Stroboscopically Matched for Super-Resolved Observation of Trapped-Ion Dynamics, Phys. Rev. A 109, 053105 (2024) – http://arxiv.org/abs/2309.15580 (2023)
- D. Palani, F. Hasse, P. Kiefer, F. Boeckling, J.-P. Schroeder, U. Warring, and T.Schaetz, High-fidelity transport of trapped-ion qubits in a multilayer array Phys. Rev. A 107, L050601 (2023)
- M. Wittemer, J.-P. Schröder, F. Hakelberg, P. Kiefer, C. Fey, R. Schuetzhold, U. Warring, T. Schaetz, Trapped-ion toolkit for studies of quantum harmonic oscillators under extreme conditions Philosophical Transactions of the Royal Society A, 378:20190230 (2020)
- U. Warring, F. Hakelberg, P. Kiefer, M. Wittemer, T. Schaetz, Trapped Ion Architecture for Multi‐Dimensional Quantum Simulations Adv. Quantum Technol. 2020, 1900137
- P. Kiefer, F. Hakelberg, M. Wittemer, A. Bermúdez, D. Porras, U. Warring, T. Schaetz, Floquet-engineered vibrational dynamics in a two-dimensional array of trapped ions Phys. Rev. Lett. 123, 213605 (2019)- arXiv:1907.06376 (2019)
- M. Wittemer, F. Hakelberg, P. Kiefer, J.-P. Schröder, C. Fey, R. Schützhold, U. Warring, T. Schaetz, Phonon pair creation by inflating quantum fluctuations in an ion trap Phys. Rev. Lett. 123, 180502 (2019) - arXiv:1903.05523 (2019)
- F. Hakelberg, P. Kiefer, M. Wittemer, U. Warring, T. Schaetz, Interference in a Prototype of a two-dimensional Ion Trap Array Quantum Simulator Phys.Rev.Lett 123 100504 (2019) - arXiv:1812.0855
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F. Hakelberg, P. Kiefer, M. Wittemer, T. Schaetz, U. Warring, Hybrid setup for stable magnetic fields enabling robust quantum control Sci. Rep. 8, 4404 (2018) - arXiv:1710.10092 (2017)
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M. Wittemer, G. Clos, H.-P. Breuer, U. Warring, T. Schaetz, Measurement of quantum memory effects and its fundamental limitations Phys. Rev. A 97, 020102(R) (2018) - arXiv: 1702.07518 (2017)
- G. Clos, D. Porras, U. Warring, and T. Schaetz, Time-resolved observation of thermalization in an isolated quantum system, Phys. Rev. Lett. 117, 170401 (2016)
- H. Kalis, F. Hakelberg, M. Wittemer, M. Mielenz, U. Warring, and T. Schaetz, Motional-mode analysis of trapped ions, Phys.Rev.A 94, 023401 (2016)
- M. Mielenz, H. Kalis, M. Wittemer, F. Hakelberg, R. Schmied, M. Blain, P. Maunz, D.L. Moehring, D. Leibfried, U. Warring, and T. Schaetz, Arrays of individually controlled ions suitable for two-dimensional quantum simulations, Nat. Commun. 7, 11839 (2016)
- A. Kellerbauer, A. Fischer, and U. Warring, Measurement of the Zeeman effect in an atomic anion: Prospects for laser cooling of Os−, Phys. Rev. A 89 , 043430 (2014).
- G. Clos, M. Enderlein, U. Warring, T. Schaetz, and D. Leibfried, Decoherence-assisted spectroscopy of a single Mg+ ion, Phys. Rev. Lett. 112 , 113003 (2014).
- U. Warring, C. Ospelkaus, Y. Colombe, R. Jördens, D. Leibfried, and D.J. Wineland, Individual-ion addressing with microwave field gradients, Phys. Rev. Lett. 110 , 173002 (2013).
- C. L. Arrington, K. S. McKay, E. D. Baca, J. J. Coleman, Y. Colombe, P. Finnegan, D. A. Hite, A. E. Hollowell, R. Jördens, J. D. Jost, D. Leibfried, A. M. Rowen, U. Warring, M. Weides, A. C. Wilson, D. J. Wineland, and D. P. Pappas, Micro-fabricated stylus ion trap, Rev. Sci. Instrum. 84, 085001 (2013).
- R. Bowler, U. Warring, J. W. Britton, B. C. Sawyer, and J. Amini, Arbitrary waveform generator for quantum information processing with trapped ions, Rev. Sci. Instrum. 84 , 033108 (2013).
- U. Warring, C. Ospelkaus, Y. Colombe, K.R. Brown, J.M. Amini, M. Carsjens, D. Leibfried, and D.J. Wineland, Techniques for microwave near-field quantum control of trapped ions, Phys. Rev. A 87 , 013437 (2013).
- D.A. Hite, Y. Colombe, A.C. Wilson, K.R. Brown, U. Warring, R. Jördens, J.D. Jost, K.S. McKay, D.P. Pappas, D. Leibfried, and D.J. Wineland, 100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleaned with In-Situ Argon-Ion-Beam Bombardment, Phys. Rev. Lett. 109 , 103001 (2012).
- C. Ospelkaus, U. Warring, Y. Colombe, K.R. Brown, J.M. Amini, D. Leibfried, and D.J. Wineland, Microwave quantum logic gates for trapped ions, Nature 476 , 181184 (2011).
- A. Kellerbauer, C. Canali, A. Fischer, U. Warring, and S. Fritzsche, Isotope shift of the electric-dipole transition in Os-, Phys. Rev. A 84 , 062510 (2011).
- P. Gross, I. D. Lindsay, C. J. Lee, M. Nittmann, T. Bauer, J. Bartschke,U. Warring, A. Fischer, A. Kellerbauer, and K.-J. Boller, Frequency control of a 1163 nm singly resonant OPO based on MgO:PPLN, Opt. Lett. 35 , 820 (2010).
- A. Fischer, C. Canali, U. Warring, A. Kellerbauer, and S. Fritzsche, First Optical Hyperfine Structure Measurement in an Atomic Anion, Phys. Rev. Lett. 104 , 073004 (2010).
- U. Warring, M. Amoretti, C. Canali, A. Fischer, R. Heyne, J.O. Meier, C. Morhard, and A. Kellerbauer, High-Resolution Laser Spectroscopy on the Neg. Osmium Ion, Phys. Rev. Lett. 102 , 043001 (2009).
- M. Kowalska, S. Naimi, J. Agramunt, A. Algora, G. Audi, D. Beck, B. Blank, K. Blaum, C. Bhm, M. Breitenfeldt, E. Estevez, L. M. Fraile, S. George, F. Herfurth, A. Herlert, A. Kellerbauer, D. Lunney, E. Minaya-Ramirez, D. Neidherr, B. Olaizola, K. Riisager, M. Rosenbusch, B. Rubio, S. Schwarz, L. Schweikhard, and U. Warring, Preparing a journey to the east of 208Pb with ISOLTRAP: Isobaric purication at A = 209 and new masses for 211-213Fr and 211Ra, Eur. Phys. J. A 42 , 351 (2009).
- A. Kellerbauer, M. Amoretti, A.S. Belov, G. Bonomi, I. Boscolo, R.S. Brusa, M. Buchner, V.M. Byakov, L. Cabaret, C. Canali, C. Carraro, F. Castelli, S. Cialdi, M. de Combarieu, D. Comparat, G. Consolati, N. Djourelov, M. Doser, G. Drobychev, A. Dupasquier, G. Ferrari, P. Forget, L. Formaro, A. Gervasini, M.G. Giammarchi, S.N. Gninenko, G. Gribakin, S.D. Hogan, M. Jacquey, V. Lagomarsino, G. Manuzio, S. Mariazzi, V.A. Matveev, J.O. Meier, F. Merkt, P. Nedelec, M.K. Oberthaler, P. Pari, M. Prevedelli, F. Quasso, A. Rotondi, D. Sillou, S.V. Stepanov, H.H. Stroke, G. Testera, G.M. Tino, G. Trenec, A. Vairo d, J. Vigue, H. Walters, U. Warring, S. Zavatarelli, and D.S. Zvezhinskij, Proposed antimatter gravity measurement with an antihydrogen beam, Nucl. Instrum. Meth. B 266 , 351 (2008)
- U. Warring, Exploring Quantum Mpemba Effects, APS Viewpoint Physics 17, 105 (2024).
- C. Ospelkaus, U. Warring, und Y. Colombe, Qubits in der Mikrowelle, Physik in Unserer Zeit 45, 72 (2014).
- Workshop for Quantum Simulations of Open Quantum Systems, A FRIAS Junior Research Conference, 13.-15. Nov. 2013, in Zusammenarbeit mit F. Mintert (http://www.frias.uni-freiburg.de/qsoqs).