Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.9k papers
- University of MichiganUS2k papers
- Institute for High Energy PhysicsES1.9k papers
- University College LondonGB1.9k papers
- University of ManchesterGB1.9k papers
- University of BonnDE1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Brookhaven National LaboratoryUS1.8k papers
- University of ArizonaUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Max Planck Institute for PhysicsDE1.8k papers
- Aix-Marseille UniversitéFR1.8k papers
15 papers · 2 filters
Quantum computing via measurements only
Robert Raussendorf, Hans J. Briegel
A quantum computer promises efficient processing of certain computational tasks that are intractable with classical computer technology. While basic principles of a quantum compute…
Absolute frequency measurement of the In clock transition with a mode-locked laser
J. von Zanthier, Th. Becker, M. Eichenseer +11
The absolute frequency of the In - clock transition at 237 nm was measured with an accuracy of 1.8 parts in . Using a phase-coherent…
Quantum Coherence in a Single Ion due to strong Excitation of a metastable Transition
J. von Zanthier, C. Skornia, G. S. Agarwal +1
We consider pump-probe spectroscopy of a single ion with a highly metastable (probe) clock transition which is monitored by using the quantum jump technique. For a weak clock laser…
A feasible "Kochen-Specker" experiment with single particles
Christoph Simon, Marek Zukowski, Harald Weinfurter +1
We present a simple experimental scheme which can be used to demonstrate an all-or-nothing type contradiction between non-contextual hidden variables and quantum mechanics. The sch…
Experiments towards Falsification of Noncontextual Hidden Variable Theories
Markus Michler, Harald Weinfurter, Marek Zukowski
We present two experiments testing the hypothesis of noncontextual hidden variables (NCHV's). The first one is based on observation of two-photon pseudo-Greenberger-Horne-Zeilinger…
Applications of Integrated Magnetic Microtraps
J. Reichel, W. Hänsel, P. Hommelhoff +1
Lithographically fabricated circuit patterns can provide magnetic guides and microtraps for cold neutral atoms. By combining several such structures on the same ceramic substrate,…
Private entanglement over arbitrary distances, even using noisy apparatus
Hans Aschauer, Hans J. Briegel
We give a security proof of quantum cryptography based entirely on entanglement purification. Our proof applies to all possible attacks (individual and coherent). It implies the se…
Remarks on 2-q-bit states
Berthold-Georg Englert, Nasser Metwally
We distinguish six classes of families of locally equivalent states in a straightforward scheme for classifying all 2-q-bit states; four of the classes consist of two subclasses ea…
Quantum coherence and interaction-free measurements
S. Potting, E. S. Lee, W. Schmitt +3
We investigate the extent to which ``interaction-free'' measurements perturb the state of quantum systems. We show that the absence of energy exchange during the measurement is not…
The Schmidt Measure as a Tool for Quantifying Multi-Particle Entanglement
J. Eisert, H. -J. Briegel
We present a measure of quantum entanglement which is capable of quantifying the degree of entanglement of a multi-partite quantum system. This measure, which is based on a general…
Persistent entanglement in arrays of interacting particles
Hans J. Briegel, Robert Raussendorf
We study the entanglement properties of a class of qubit quantum states that are generated in arrays of qubits with an Ising-type interaction. These states contain a large amou…
Separability of entangled q-bit pairs
Berthold-Georg Englert, Nasser Metwally
The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally regarded as the components of two 3-vectors and a -dyadic. There are easy-…
Dark-State Polaritons in Electromagnetically Induced Transparency
M. Fleischhauer, M. D. Lukin
We identify form-stable coupled excitations of light and matter (``dark-state polaritons'') associated with the propagation of quantum fields in Electromagnetically Induced Transpa…
Quantum limit of optical magnetometry in the presence of ac-Stark shifts
M. Fleischhauer, A. B. Matsko, M. O. Scully
We analyze systematic (classical) and fundamental (quantum) limitations of the sensitivity of optical magnetometers resulting from ac-Stark shifts. We show that in contrast to abso…
Scattering theory from microscopic first principles
Detlef Duerr, Sheldon Goldstein, Stefan Teufel +1
We sketch a derivation of abstract scattering theory from the microscopic first principles defined by Bohmian mechanics. We emphasize the importance of the flux-across-surfaces the…