Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Poschinger, U."'
Autor:
Onishchenko, O., Guarnieri, G., Rosillo-Rodes, P., Pijn, D., Hilder, J., Poschinger, U. G., Perarnau-Llobet, M., Eisert, J., Schmidt-Kaler, F.
Publikováno v:
Nature Comm. 15, 6974 (2024)
Quantum thermodynamics is aimed at grasping thermodynamic laws as they apply to thermal machines operating in the deep quantum regime, a regime in which coherences and entanglement are expected to matter. Despite substantial progress, however, it has
Externí odkaz:
http://arxiv.org/abs/2207.14325
Autor:
Kaushal, V., Lekitsch, B., Stahl, A., Hilder, J., Pijn, D., Schmiegelow, C., Bermudez, A., Müller, M., Schmidt-Kaler, F., Poschinger, U.
Moving trapped-ion qubits in a microstructured array of radiofrequency traps offers a route towards realizing scalable quantum processing nodes. Establishing such nodes, providing sufficient functionality to represent a building block for emerging qu
Externí odkaz:
http://arxiv.org/abs/1912.04712
Autor:
Kaufmann, H., Ruster, T., Schmiegelow, C. T., Luda, M. A., Kaushal, V., Schulz, J., von Lindenfels, D., Schmidt-Kaler, F., Poschinger, U. G.
Publikováno v:
Phys. Rev. Lett. 119, 150503 (2017)
We demonstrate the deterministic generation of multipartite entanglement based on scalable methods. Four qubits are encoded in $^{40}$Ca$^+$, stored in a micro-structured segmented Paul trap. These qubits are sequentially entangled by laser-driven pa
Externí odkaz:
http://arxiv.org/abs/1707.03695
Autor:
Bermudez, A., Xu, X., Nigmatullin, R., O'Gorman, J., Negnevitsky, V., Schindler, P., Monz, T., Poschinger, U. G., Hempel, C., Home, J., Schmidt-Kaler, F., Biercuk, M., Blatt, R., Benjamin, S., Müller, M.
Publikováno v:
Phys. Rev. X 7, 041061 (2017)
A quantitative assessment of the progress of small prototype quantum processors towards fault-tolerant quantum computation is a problem of current interest in experimental and theoretical quantum information science. We introduce a necessary and fair
Externí odkaz:
http://arxiv.org/abs/1705.02771
Autor:
Ruster, T., Kaufmann, H., Luda, M. A., Kaushal, V., Schmiegelow, C. T., Schmidt-Kaler, F., Poschinger, U. G.
Publikováno v:
Phys. Rev. X 7, 031050 (2017)
We demonstrate sensing of inhomogeneous dc magnetic fields by employing entangled trapped ions, which are shuttled in a segmented Paul trap. As \textit{sensor states}, we use Bell states of the type $\left|\uparrow\downarrow\right>+\text{e}^{\text{i}
Externí odkaz:
http://arxiv.org/abs/1704.01793
Autor:
Brandl, M. F., van Mourik, M. W., Postler, L., Nolf, A., Lakhmanskiy, K., Paiva, R. R., Möller, S., Daniilidis, N., Häffner, H., Kaushal, V., Ruster, T., Warschburger, C., Kaufmann, H., Poschinger, U. G., Schmidt-Kaler, F., Schindler, P., Monz, T., Blatt, R.
We report on the design of a cryogenic setup for trapped ion quantum computing containing a segmented surface electrode trap. The heat shield of our cryostat is designed to attenuate alternating magnetic field noise, resulting in 120~dB reduction of
Externí odkaz:
http://arxiv.org/abs/1607.04980
Publikováno v:
New J. Phys. 17, 093031 (2015)
We design fast protocols to separate or recombine two ions in a segmented Paul trap. By inverse engineering the time evolution of the trapping potential composed of a harmonic and a quartic term, it is possible to perform these processes in a few mic
Externí odkaz:
http://arxiv.org/abs/1505.04942
Autor:
Hettrich, M., Ruster, T., Kaufmann, H., Roos, C. F., Schmiegelow, C. T., Schmidt-Kaler, F., Poschinger, U. G.
Publikováno v:
Phys. Rev. Lett. 115, 143003 (2015)
We demonstrate a new method for the direct measurement of atomic dipole transition matrix elements based on techniques developed for quantum information purposes. The scheme consists of measuring dispersive and absorptive off-resonant light-ion inter
Externí odkaz:
http://arxiv.org/abs/1505.02574
We theoretically investigate the motional excitation of a single ion caused by spring-constant and position uctuations of a harmonic trap during trap shuttling processes. A detailed study of the sensitivity on noise for several transport protocols an
Externí odkaz:
http://arxiv.org/abs/1404.4257
We theoretically investigate the process of splitting two-ion crystals in segmented Paul traps, i.e. the structural transition from two ions confined in a common well to ions confined in separate wells. The precise control of this process by applicat
Externí odkaz:
http://arxiv.org/abs/1403.0097