Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Zähringer, F."'
Autor:
Lanyon, B. P., Hempel, C., Nigg, D., Müller, M., Gerritsma, R., Zähringer, F., Schindler, P., Barreiro, J. T., Rambach, M., Kirchmair, G., Hennrich, M., Zoller, P., Blatt, R., Roos, C. F.
Publikováno v:
Science 334, 57 (2011)
A digital quantum simulator is an envisioned quantum device that can be pro- grammed to efficiently simulate any other local system. We demonstrate and investigate the digital approach to quantum simulation in a system of trapped ions. Using sequence
Externí odkaz:
http://arxiv.org/abs/1109.1512
Autor:
Gerritsma, R., Lanyon, B., Kirchmair, G., Zähringer, F., Hempel, C., Casanova, J., García-Ripoll, J. J., Solano, E., Blatt, R., Roos, C. F.
Publikováno v:
Phys.Rev.Lett.106:060503,2011
We report on quantum simulations of relativistic scattering dynamics using trapped ions. The simulated state of a scattering particle is encoded in both the electronic and vibrational state of an ion, representing the discrete and continuous componen
Externí odkaz:
http://arxiv.org/abs/1007.3683
Autor:
Gühne, O., Kleinmann, M., Cabello, A., Larsson, J. -A., Kirchmair, G., Zähringer, F., Gerritsma, R., Roos, C. F.
Publikováno v:
Phys. Rev. A 81, 022121 (2010)
A basic assumption behind the inequalities used for testing noncontextual hidden variable models is that the observables measured on the same individual system are perfectly compatible. However, compatibility is not perfect in actual experiments usin
Externí odkaz:
http://arxiv.org/abs/0912.4846
Publikováno v:
Phys. Rev. Lett. 104, 100503 (2010)
We experimentally demonstrate a quantum walk on a line in phase space using one and two trapped ion. A walk with up to 23 steps is realized by subjecting an ion to state-dependent displacement operations interleaved with quantum coin tossing operatio
Externí odkaz:
http://arxiv.org/abs/0911.1876
Publikováno v:
Nature 463, 68 (2010)
The Dirac equation is a cornerstone in the history of physics, merging successfully quantum mechanics with special relativity, providing a natural description of the electron spin and predicting the existence of anti-matter. Furthermore, it is able t
Externí odkaz:
http://arxiv.org/abs/0909.0674
Publikováno v:
New J. Phys. 11 (2009) 103008
In the endeavour to scale up the number of qubits in an ion-based quantum computer several groups have started to develop miniaturized ion traps for extended spatial control and manipulation of the ions. Shuttling and separation of ion strings have b
Externí odkaz:
http://arxiv.org/abs/0906.5335
Autor:
Kirchmair, G., Zähringer, F., Gerritsma, R., Kleinmann, M., Gühne, O., Cabello, A., Blatt, R., Roos, C. F.
Publikováno v:
Nature 460, 494 (2009)
The question of whether quantum phenomena can be explained by classical models with hidden variables is the subject of a long lasting debate. In 1964, Bell showed that certain types of classical models cannot explain the quantum mechanical prediction
Externí odkaz:
http://arxiv.org/abs/0904.1655
Publikováno v:
Phys. Rev. A 79, 020304 (2009)
In an experiment using the odd calcium isotope 43Ca+ we combine the merits of a high fidelity entangling operation on an optical transition (optical qubit) with the long coherence times of two 'clock' states in the hyperfine ground state (hyperfine q
Externí odkaz:
http://arxiv.org/abs/0812.1976
Publikováno v:
New. J. Phys. 11, 023002 (2009)
We give a detailed description of the implementation of a Molmer-Sorensen gate entangling two Ca+ ions using a bichromatic laser beam near-resonant with a quadrupole transition. By amplitude pulse shaping and compensation of AC-Stark shifts we achiev
Externí odkaz:
http://arxiv.org/abs/0810.0670
Publikováno v:
Eur. Phys. J. D 50, 13 (2008)
We perform precision measurements of the branching ratios of the 4P3/2 level decay of a single 40Ca+ ion suspended in a linear Paul trap. High precision is achieved by a novel technique based on monitoring the population transfer when repeatedly pump
Externí odkaz:
http://arxiv.org/abs/0807.2905