C
Christian Ospelkaus
Researcher at Leibniz University of Hanover
Publications - 113
Citations - 4331
Christian Ospelkaus is an academic researcher from Leibniz University of Hanover. The author has contributed to research in topics: Antiproton & Ion trap. The author has an hindex of 30, co-authored 99 publications receiving 3828 citations. Previous affiliations of Christian Ospelkaus include Max Planck Society & University of Hamburg.
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Journal ArticleDOI
Microwave quantum logic gates for trapped ions
Christian Ospelkaus,U. Warring,Yves Colombe,Kenton R. Brown,Kenton R. Brown,Jason M. Amini,Jason M. Amini,Dietrich Leibfried,David J. Wineland +8 more
TL;DR: The approach, which involves integrating the quantum control mechanism into the trapping device in a scalable manner, could be applied to quantum information processing, simulation and spectroscopy.
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Ultracold heteronuclear molecules in a 3D optical lattice.
TL;DR: The efficiency of molecule creation via rf association is measured and is found to decrease as expected for more deeply bound molecules, and the binding energy of the heteronuclear molecules from rf spectroscopy across the Feshbach resonance is determined.
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Localization of bosonic atoms by fermionic impurities in a three-dimensional optical lattice.
TL;DR: The observed shift is larger than expected based on a simple mean-field argument, which indicates that disorder-related effects play a significant role in the transition parameter.
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Coupled quantized mechanical oscillators
Kenton R. Brown,Christian Ospelkaus,Yves Colombe,Andrew C. Wilson,Dietrich Leibfried,David J. Wineland +5 more
TL;DR: This work implements direct controllable coupling between quantized mechanical oscillators held in separate locations through the mutual Coulomb interaction of two ions held in trapping potentials separated by 40 μm, establishing that direct coherent motional coupling is possible for separately trapped ions.
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Single-qubit-gate error below 10 − 4 in a trapped ion
Kenton R. Brown,Andrew C. Wilson,Yves Colombe,Christian Ospelkaus,Adam M. Meier,Emanuel Knill,D. Leibfried,David J. Wineland +7 more
TL;DR: In this article, the authors demonstrate an error probability per randomized single-qubit gate of 2.0(2) for a trapped ion hyperfine-state qubit, which is the threshold for fault-tolerant quantum computing.