H
Hartmut Häffner
Researcher at University of California, Berkeley
Publications - 135
Citations - 10102
Hartmut Häffner is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Ion trap & Trapped ion quantum computer. The author has an hindex of 44, co-authored 134 publications receiving 9230 citations. Previous affiliations of Hartmut Häffner include Institute for Quantum Optics and Quantum Information & University of Mainz.
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Strongly enhanced effects of Lorentz symmetry violation in entangled Yb+ ions
V. A. Dzuba,Victor V. Flambaum,Marianna Safronova,Marianna Safronova,S. G. Porsev,S. G. Porsev,Thaned Pruttivarasin,Michael Hohensee,Hartmut Häffner +8 more
TL;DR: In this article, the authors carried out a systematic theoretical investigation of the sensitivity of a wide range of atomic systems to violation of local Lorentz invariance (LLI), and identified the Yb+ ion as an ideal system with high sensitivity and excellent experimental controllability.
Proceedings ArticleDOI
A universal set of quantum gates on trapped ions in a decoherence-free subspace
Hartmut Häffner,Kihwan Kim,Thomas Monz,Alessandro Villar,Philipp Schindler,M. Chwalla,M. Riebe,Markus Hennrich,W. Hänsel,Rainer Blatt +9 more
TL;DR: In this paper, the realization of a universal set of quantum gates acting on such a decoherence-free suspace is discussed, which can store quantum information four orders of magnitude longer than single ions.
Proceedings ArticleDOI
The g-factor of hydrogen-like ions
M. Diederich,Hartmut Häffner,N. Hermanspahn,M. Immel,H.-J. Kluge,R. Ley,R. Mann,S. Stahl,Wolfgang Quint,J. Verdú,Günter Werth +10 more
TL;DR: In this paper, the first direct measurement of the magnetic moment of a highly charged ion was performed by inducing spin flip transitions with a microwave field at the Larmor precession frequency of the bound electron.
Book ChapterDOI
Measurement of the g factor of the bound electron in hydrogen-like oxygen 16O7+
J. Verdú,Thomas Beier,S. Djekic,Hartmut Häffner,H.-J. Kluge,Wolfgang Quint,T. Valenzuela,Günter Werth +7 more
TL;DR: The measurement of the g factor of the electron bound in a hydrogen-like ion is a high-accuracy test of the theory of Quantum Electrodynamics (QED) in strong fields as discussed by the authors.
Journal ArticleDOI
Erratum: Nonlinear spectroscopy of controllable many-body quantum systems (2014 New J. Phys. 16 092001 )
Manuel Gessner,Manuel Gessner,Frank Schlawin,Frank Schlawin,Hartmut Häffner,Shaul Mukamel,Andreas Buchleitner +6 more
TL;DR: In this paper, nonlinear spectroscopy of controllable many-body quantum systems is used to analyze the properties of quantum systems and their properties in terms of their properties and properties.