Publikationen der Trapped-Ion Quantum Engineering Forschungsgruppe

J. A. Devlin, M. J. Borchert, S. Erlewein, M. Fleck, J. A. Harrington, B. Latacz, J. Warncke, E. Wursten, M. A. Bohman, A. H. Mooser, C. Smorra, M. Wiesinger, C. Will, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer (2021): Constraints on the Coupling between Axionlike Dark Matter and Photons Using an Antiproton Superconducting Tuned Detection Circuit in a Cryogenic Penning Trap,  Phys. Rev. Lett. 126, 041301 (2021)
DOI: 10.1103/PhysRevLett.126.041301

J. M. Cornejo, R. Lehnert, M. Niemann, J. Mielke, T. Meiners, A. Bautista-Salvador, M. Schulte, D. Nitzschke, M. J. Borchert, K. Hammerer, S. Ulmer, and C. Ospelkaus (2021): Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons,  Accepted for publication in New Journal of Physics
DOI: 10.1088/1367-2630/ac136e
arXiv: 2106.06252

J. Mielke, J. Pick, J. A. Coenders, T. Meiners, M. Niemann, J. M. Cornejo, S. Ulmer, and C. Ospelkaus (2021): 139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of 9Be+ ions in a Penning trap
arXiv: 2106.13532

U. Tanaka, M. Nakamura, K. Hayasaka, A. Bautista-Salvador, C. Ospelkaus and T. E. Mehlstäubler (2021): Creation of double-well potentials in a surface-electrode trap towards a nanofriction model emulator,  Quantum Sci. Technol. 6, 024010
DOI: 10.1088/2058-9565/abe51a

D. Nitzschke, M. Schulte, M. Niemann, J. M. Cornejo, S. Ulmer, R. Lehnert, C. Ospelkaus, and K. Hammerer (2020): Elementary Laser‐Less Quantum Logic Operations with (Anti‐)Protons in Penning Traps,  Adv. Quantum Technol. 3, 1900133 (2020)
DOI: 10.1002/qute.201900133

M. Raghunandan, F. Wolf, C. Ospelkaus, P. O. Schmidt, and H. Weimer (2020): Initialization of quantum simulators by sympathetic cooling,  Sci. Adv. 6, eaaw9268 (2020)
DOI: 10.1126/sciadv.aaw9268

A. Bautista-Salvador, G. Zarantonello, H. Hahn, A. Preciado-Grijalva, J. Morgner, M. Wahnschaffe, and C. Ospelkaus (2019): Multilayer ion trap technology for scalable quantum computing and quantum simulation,  New J. Phys. 21, 043011 (2019)
DOI: 10.1088/1367-2630/ab0e46

A.-G. Paschke, G. Zarantonello, H. Hahn, T. Lang, C. Manzoni, M. Marangoni, G. Cerullo, U. Morgner, and C. Ospelkaus (2019): Versatile Control of 9Be+ Ions Using a Spectrally Tailored UV Frequency Comb,  Phys. Rev. Lett. 122, 123606 (2019)
DOI: 10.1103/PhysRevLett.122.123606

C. Smorra, Y. V. Stadnik, P. E. Blessing, M. Bohman, M. J. Borchert, J. A. Devlin, S. Erlewein, J. A. Harrington, T. Higuchi, A. Mooser, G. Schneider, M. Wiesinger, E. Wursten, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, D. Budker, and S. Ulmer (2019): Direct limits on the interaction of antiprotons with axion-like dark matter,  Nature 575, 310 (2019)
DOI: 10.1038/s41586-019-1727-9

D. Nitzschke, M. Schulte, M. Niemann, J. M. Cornejo, S. Ulmer, R. Lehnert, C. Ospelkaus, and K. Hammerer (2019): Elementary laser-less quantum logic operations with (anti-)protons in Penning traps
arXiv: 1912.02046

G. Zarantonello, H. Hahn, J. Morgner, M. Schulte, A. Bautista-Salvador, R. F. Werner, K. Hammerer, and C. Ospelkaus (2019): Robust and resource-efficient microwave near-field entangling 9Be+ gate,  Phys. Rev. Lett. 123, 260503 (2019)
DOI: 10.1103/PhysRevLett.123.260503

H. Hahn, G. Zarantonello, A. Bautista-Salvador, M. Wahnschaffe, M. Kohnen, J. Schoebel, P. O. Schmidt, and C. Ospelkaus (2019): Multilayer ion trap with 3-dimensional microwave circuitry for scalable quantum logic applications,  Appl. Phys. B 125, 154 (2019)
DOI: 10.1007/s00340-019-7265-1

H. Hahn, G. Zarantonello, M. Schulte, A. Bautista-Salvador, K. Hammerer, C. Ospelkaus (2019): Integrated 9Be+ multi-qubit gate device for the ion-trap quantum computer,  npj Quantum Inf. 5, 1-5 (2019)
DOI: 10.1038/s41534-019-0184-5

J. A. Devlin, E. Wursten, J. A. Harrington, T. Higuchi, P. E. Blessing, M. J. Borchert, S. Erlewein, J. J. Hansen, J. Morgner, M. A. Bohman, A. H. Mooser, C. Smorra, M. Wiesinger, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer (2019): Superconducting Solenoid System with Adjustable Shielding Factor for Precision Measurements of the Properties of the Antiproton,  Phys. Rev. Appl. 12, 044012 (2019)
DOI: 10.1103/PhysRevApplied.12.044012

M. J. Borchert, P. E. Blessing, J. A. Devlin, J. A. Harrington, T. Higuchi, J. Morgner, C. Smorra, E. Wursten, M. Bohman, M. Wiesinger, A. Mooser, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer (2019): Measurement of Ultralow Heating Rates of a Single Antiproton in a Cryogenic Penning Trap,  Phys. Rev. Lett. 122, 043201 (2019)
DOI: 10.1103/PhysRevLett.122.043201

M. Niemann, T. Meiners, J. Mielke, M. J. Borchert, J. M. Cornejo, S. Ulmer, and C. Ospelkaus (2019): Cryogenic 9Be+ Penning trap for precision measurements with (anti-)protons,  Meas. Sci. Technol. 31, 035003 (2019)
DOI: 10.1088/1361-6501/ab5722

T. Leopold, S. A. King, P. Micke, A. Bautista-Salvador, J. C. Heip, C. Ospelkaus, J. R. Crespo López-Urrutia, P. O. Schmidt (2019): A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions,  Rev. Sci. Instrum 90, 073201 (2019)
DOI: 10.1063/1.5100594

S. Hannig, J. Mielke, J. A. Fenske, M. Misera, N. Beev, C. Ospelkaus, and P. O. Schmidt (2018): A highly stable monolithic enhancement cavity for second harmonic generation in the ultraviolet,  Review of Scientific Instruments 89, 013106 (2018)
DOI: 10.1063/1.5005515

C. Smorra, A. Mooser, M. Besirli, M. Bohman, M. J. Borchert, J. Harrington, T. Higuchi, H. Nagahama, G. L. Schneider, S. Sellner, T. Tanaka, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer (2017): Observation of individual spin quantum transitions of a single antiproton,  Physics Letters B 769, 1 (2017)
DOI: 10.1016/j.physletb.2017.03.024

C. Smorra, S. Sellner, M. J. Borchert, J. A. Harrington, T. Higuchi, H. Nagahama, T. Tanaka, A. Mooser, G. Schneider, M. Bohman, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki & S. Ulmer (2017): A parts-per-billion measurement of the antiproton magnetic moment,  Nature 550, 371–374 (2017)
DOI: 10.1038/nature24048

H. Nagahama, C. Smorra, S. Sellner, J. Harrington, T. Higuchi, M. J. Borchert, T. Tanaka, M. Besirli, A. Mooser, G. Schneider, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki & S. Ulmer (2017): Sixfold improved single particle measurement of the magnetic moment of the antiproton,  Nature Communications 8, 14084 (2017)
DOI: 10.1038/ncomms14084

M. Wahnschaffe, H. Hahn, G. Zarantonello, T. Dubielzig, S. Grondkowski, A. Bautista-Salvador, M. Kohnen, and C. Ospelkaus (2017): Single-ion microwave near-field quantum sensor,  Applied Physics Letters 110, 034103 (2017)
DOI: 10.1063/1.4974736

S. Sellner, M. Besirli, M. Bohman, M. J. Borchert, J. Harrington, T. Higuchi, A. Mooser, H. Nagahama, G. Schneider, C. Smorra, T. Tanaka, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki and S. Ulmer (2017): Improved limit on the directly measured antiproton lifetime,  New Journal of Physics 19, 083023 (2017)
DOI: 10.1088/1367-2630/aa7e73

H. Nagahama, G. Schneider, A. Mooser, C. Smorra, S. Sellner, J. Harrington, T. Higuchi, M. Borchert, T. Tanaka, M. Besirli, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer (2016): Highly sensitive superconducting circuits at ∼700 kHz with tunable quality factors for image-current detection of single trapped antiprotons,  Review of Scientific Instruments 87, 113305 (2016)
DOI: 10.1063/1.4967493

J. M. Cornejo, M. J. Gutiérrez, E. Ruiz, A. Bautista-Salvador, C. Ospelkaus, S. Stahl, D. Rodríguez (2016): An optimized geometry for a micro Penning-trap mass spectrometer based on interconnected ions,  International Journal of Mass Spectrometry 410, 22 (2016)
DOI: 10.1016/j.ijms.2016.10.010

C. Smorra, K. Blaum, L. Bojtar, M. Borchert, K. A. Franke, T. Higuchi, N. Leefer, H. Nagahama , Y. Matsuda, A. Mooser, M. Niemann, C. Ospelkaus, W. Quint, G. Schneider, S. Sellner, T. Tanaka, S. Van Gorp, J. Walz, Y. Yamazaki, and S. Ulmer (2015): BASE – The Baryon Antibaryon Symmetry Experiment,  The European Physical Journal Special Topics 224, 3055 (2015)
DOI: 10.1140/epjst/e2015-02607-4

C. Ospelkaus, U. Warring, Y. Colombe (2014): Qubits in der Mikrowelle,  Physik in unserer Zeit 45, 72 (2014)
DOI: 10.1002/piuz.201301358

C. Smorra, K. Blaum, K. Franke, Y. Matsuda, A. Mooser, H. Nagahama, C. Ospelkaus, W. Quint, G. Schneider, S. Van Gorp, J. Walz, Y. Yamazaki, S. Ulmer (2014): Towards a high-precision measurement of the antiproton magnetic moment,  Hyperfine Interactions 228, 31 (2014)
DOI: 10.1007/s10751-014-1018-7

S. Ulmer, A. Mooser, K. Blaum, S. Braeuninger, K. Franke, H. Kracke, C. Leiteritz, Y. Matsuda, H. Nagahama, C. Ospelkaus, C. C. Rodegheri, W. Quint, G. Schneider, C. Smorra, S. Van Gorp, J. Walz, and Y. Yamazaki (2014): The magnetic moments of the proton and the antiproton,  Journal of Physics: Conference Series 488, 012033 (2014)
DOI: 10.1088/1742-6596/488/1/012033

M. Carsjens, M. Kohnen, T. Dubielzig, and C. Ospelkaus (2013): Surface-electrode Paul trap with optimized near-field microwave control,  Applied Physics B 114, 243 (2013)
DOI: 10.1007/s00340-013-5689-6

U. Warring, C. Ospelkaus, Y. Colombe, K. R. Brown, J. M. Amini, M. Carsjens, D. Leibfried, and D. J. Wineland (2013): Techniques for microwave near-field quantum control of trapped ions,  Physical Review A 87, 013437 (2013)
DOI: 10.1103/PhysRevA.87.013437

U. Warring, C. Ospelkaus, Y. Colombe, R. Jördens, D. Leibfried, and D. J. Wineland (2013): Individual-Ion Addressing with Microwave Field Gradients,  Physical Review Letters 110, 173002 (2013)
DOI: 10.1103/PhysRevLett.110.173002

A.C. Wilson, C. Ospelkaus, A.P. VanDevender, J.A. Mlynek, K.R. Brown, D. Leibfried, and D.J. Wineland (2011): A 750-mW, continuous-wave, solid-state laser source at 313 nm for cooling and manipulating trapped ⁹Be⁺ ions,  Applied Physics B 105, 741 (2011) Weitere Informationen

C. Ospelkaus, U. Warring, Y. Colombe, K. R. Brown, J. M. Amini, D. Leibfried, D. J. Wineland (2011): Microwave quantum logic gates for trapped ions,  Nature 476, 181 (2011) | Datei | Weitere Informationen

K. R. Brown, A. C. Wilson, Y. Colombe, C. Ospelkaus, A. M. Meier, E. Knill, D. Leibfried, D. J. Wineland (2011): Single-qubit gate error below 10^-4 in a trapped ion,  Phys. Rev. A 84, 030303 (2011) | Datei | Weitere Informationen

K. R. Brown, C. Ospelkaus, Y. Colombe, A. C. Wilson, D. Leibfried, D. J. Wineland (2011): Coupled quantized mechanical oscillators,  Nature 471, 196 (2011) | Datei | Weitere Informationen

R. B. Blakestad, C. Ospelkaus, A. P. VanDevender, J. H. Wesenberg, M. J. Biercuk, D. Leibfried, and D. J. Wineland (2011): Near-ground-state transport of trapped-ion qubits through a multidimensional array,  Phys. Rev. A 84, 032314 (2011) | Datei | Weitere Informationen

H. Uys, M. J. Biercuk, A. P. VanDevender, C. Ospelkaus, D. Meiser, R. Ozeri, J. J. Bollinger (2010): Decoherence due to Elastic Rayleigh Scattering,  Physical Review Letters 105, 200401 (2010) | Datei | Weitere Informationen

J. M. Amini, H. Uys, J. H. Wesenberg, S. Seidelin, J. Britton, J. J. Bollinger, D. Leibfried, C. Ospelkaus, A. P. VanDevender, D. J. Wineland (2010): Towards scalable ion traps for quantum information processing,  New Journal of Physics 12, 033031 (2010) | Datei | Weitere Informationen

D. R. Leibrandt, J. Labaziewicz, R. J. Clark, I. L. Chuang, R. J. Epstein, C. Ospelkaus, J. H. Wesenberg, J. J. Bollinger, D. Leibfried, D. J. Wineland, D. Stick, J. Sterk, C. Monroe, C.-S. Pai, Y. Low, R. Frahm, R. E. Slusher (2009): Demonstration of a scalable, multiplexed ion trap for quantum information processing,  Quantum Information & Computation 11 & 12, 0901 (2009) | Datei | Weitere Informationen

R. B. Blakestad, C. Ospelkaus, A. P. VanDevender, J. M. Amini, J. Britton, D. Leibfried, D. J. Wineland (2009): High-Fidelity Transport of Trapped-Ion Qubits through an X-Junction Trap Array,  Physical Review Letters 102, 153002 (2009) | Datei | Weitere Informationen

C. Ospelkaus, C. E. Langer, J. M. Amini, K. R. Brown, D. Leibfried, D. J. Wineland (2008): Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields,  Physical Review Letters 101, 090502 (2008) | Datei | Weitere Informationen

C. Ospelkaus, S. Ospelkaus (2008): Heteronuclear quantum gas mixtures,  Journal of Physics B: Atomic, Molecular and Optical Physics 41, 203001 (2008) | Datei | Weitere Informationen

F. Deuretzbacher, K. Plassmeier, D. Pfannkuche, F. Werner, C. Ospelkaus, S. Ospelkaus, K. Sengstock, K. Bongs (2008): Heteronuclear molecules in an optical lattice: Theory and experiment,  Physical Review A 77, 032726 | Datei | Weitere Informationen

M. Cramer, S. Ospelkaus, C. Ospelkaus, K. Bongs, K. Sengstock, J. Eisert (2008): Do Mixtures of Bosonic and Fermionic Atoms Adiabatically Heat Up in Optical Lattices?,  Physical Review Letters 100, 140409 (2008) | Datei | Weitere Informationen

D. Leibfried, E. Knill, C. Ospelkaus, D. J. Wineland (2007): Transport quantum logic gates for trapped ions,  Physical Review A 76, 032324 (2007) | Datei | Weitere Informationen

S. Ospelkaus, C. Ospelkausa, R. Dinter, J. Fuchs, M. Nakat, K. Sengstock, K. Bongs (2007): Degenerate K–Rb Fermi–Bose gas mixtures with large particle numbers,  Journal of Modern Optics 54, 661 (2007) Weitere Informationen

C. Ospelkaus, S. Ospelkaus, K. Sengstock, K. Bongs (2006): Interaction-Driven Dynamics of ⁴⁰K-⁸⁷Rb Fermion-Boson Gas Mixtures in the Large-Particle-Number Limit,  Physical Review Letters 96, 020401 (2006) | Datei | Weitere Informationen

C. Ospelkaus, S. Ospelkaus, L. Humbert, P. Ernst, K. Sengstock, K. Bongs (2006): Ultracold Heteronuclear Molecules in a 3D Optical Lattice,  Physical Review Letters 97, 120402 (2006) | Datei | Weitere Informationen

S. Ospelkaus, C. Ospelkaus, L. Humbert, K. Sengstock, K. Bongs (2006): Tuning of Heteronuclear Interactions in a Degenerate Fermi-Bose Mixture,  Physical Review Letters 97, 120403 (2006) | Datei | Weitere Informationen

S. Ospelkaus, C. Ospelkaus, O. Wille, M. Succo, P. Ernst, K. Sengstock, K. Bongs (2006): Localization of Bosonic Atoms by Fermionic Impurities in a Three-Dimensional Optical Lattice,  Physical Review Letters 96, 180403 (2006) | Datei | Weitere Informationen

C. Ospelkaus, U. Rasbach, A. Weis (2003): Measurement of the forbidden tensor polarizability of Cs using an all-optical Ramsey resonance technique,  Physical Review A 67, 011402(R) (2003) | Datei | Weitere Informationen

T. Meiners, M. Niemann, J. Mielke, M. Borchert, N. Pulido, J.M. Cornejo, S. Ulmer, and C. Ospelkaus (2018): Towards sympathetic cooling of single (anti-)protons,  Hyperfine Interactions 239, 26 (2018)
DOI: 10.1007/s10751-018-1502-6

T. Meiners, M. Niemann, A.-G. Paschke, J. Mielke, A. Idel, K. Voges, M. Borchert, A. Bautista-Salvador, S. Ulmer, C. Ospelkaus (2017): Towards Quantum Logic Inspired Cooling and Detection for Single (Anti-)Protons,  JPS Conf. Proc. 18, 011006 (2017)
DOI: 10.7566/JPSCP.18.011006

T. Meiners, M. Niemann, A.-G. Paschke, M. Borchert, A. Idel, J. Mielke, K. Voges, A. Bautista-Salvador, R. Lehnert, S. Ulmer, and C. Ospelkaus (2016): Towards Sympathetic Laser Cooling and Detection of Single (Anti-)Protons,  Seventh Meeting on CPT and Lorentz Symmetry (CPT’16)
DOI: 10.1142/10250

H. Hahn (2019): Two-qubit microwave quantum logic gate with 9Be+ ions in scalable surface-electrode ion traps,  Dissertation, Leibniz Universität Hannover Weitere Informationen

M. Niemann (2019): Design and commissioning of an experiment for sympathetic cooling and coupling of ions in a cryogenic Penning trap,  Dissertation, Leibniz Universität Hannover Weitere Informationen

A.-G. Paschke (2017): 9Be+ ion qubit control using an optical frequency comb,  Dissertation, Leibniz Universität Hannover Weitere Informationen

M. Wahnschaffe (2016): Engineered microwave control for trapped ions,  Dissertation, Leibniz Universität Hannover Weitere Informationen

C. Ospelkaus (2006): Fermi-Bose mixtures - From mean-field interactions to ultracold chemistry,  Dissertation, Universität Hamburg | Datei | Weitere Informationen