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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Journal ArticleDOI
Scalable multiparticle entanglement of trapped ions
Hartmut Häffner,W. Hänsel,Christian F. Roos,J. Benhelm,D. Chek-Al-Kar,M. Chwalla,T. Körber,Umakant D. Rapol,M. Riebe,Piet O. Schmidt,Christoph Becher,Otfried Gühne,Wolfgang Dür,Wolfgang Dür,Rainer Blatt +14 more
TL;DR: The scalable and deterministic generation of four-, five-, six-, seven- and eight-particle entangled states of the W type with trapped ions are reported, which obtain the maximum possible information on these states by performing full characterization via state tomography, using individual control and detection of the ions.
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Deterministic quantum teleportation with atoms
M. Riebe,Hartmut Häffner,Christian F. Roos,W. Hänsel,J. Benhelm,G.P.T. Lancaster,T. Körber,Christoph Becher,Ferdinand Schmidt-Kaler,Daniel F. V. James,Rainer Blatt,Rainer Blatt +11 more
TL;DR: Deterministic quantum-state teleportation between a pair of trapped calcium ions is reported, demonstrating unequivocally the quantum nature of the process.
Journal ArticleDOI
Quantum computing with trapped ions
TL;DR: In this article, the authors review recent experimental advances towards a quantum computer with trapped ions and present some implementations of quantum algorithms such as deterministic teleportation of quantum information and an error correction scheme.
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Realization of the Cirac–Zoller controlled-NOT quantum gate
Ferdinand Schmidt-Kaler,Hartmut Häffner,M. Riebe,S. Gulde,G.P.T. Lancaster,T. Deuschle,Christoph Becher,Christian F. Roos,Jürgen Eschner,Rainer Blatt +9 more
TL;DR: This work implements a CNOT quantum gate according to the Cirac–Zoller proposal, which relies on recently developed precise control of atomic phases and the application of composite pulse sequences adapted from nuclear magnetic resonance techniques.
Journal ArticleDOI
Implementation of the Deutsch-Jozsa algorithm on an ion-trap quantum computer.
S. Gulde,M. Riebe,G.P.T. Lancaster,Christoph Becher,Jürgen Eschner,Hartmut Häffner,Ferdinand Schmidt-Kaler,Isaac L. Chuang,Isaac L. Chuang,Rainer Blatt +9 more
TL;DR: This work exploits techniques developed for nuclear magnetic resonance to implement the Deutsch–Jozsa algorithm on an ion-trap quantum processor, using as qubits the electronic and motional states of a single calcium ion.