Zobrazeno 1 - 10
of 391
pro vyhledávání: '"Gühne, O."'
Publikováno v:
Phys. Rev. A 97, 032330 (2018)
We consider three-partite pure states in the Hilbert space $\mathbb{C}^2 \otimes \mathbb{C}^m \otimes \mathbb{C}^n$ and investigate to which states a given state can be locally transformed with a non-vanishing probability. Whenever the initial and fi
Externí odkaz:
http://arxiv.org/abs/1710.00981
Autor:
Gühne, O., Cuquet, M., Steinhoff, F. E. S., Moroder, T., Rossi, M., Bruß, D., Kraus, B., Macchiavello, C.
Publikováno v:
J. Phys. A: Math. Theor. 47, 335303 (2014)
Hypergraph states are multi-qubit states that form a subset of the locally maximally entangleable states and a generalization of the well--established notion of graph states. Mathematically, they can conveniently be described by a hypergraph that ind
Externí odkaz:
http://arxiv.org/abs/1404.6492
Autor:
Amselem, E., Bourennane, M., Budroni, C., Cabello, A., Gühne, O., Kleinmann, M., Larsson, J. -Å., Wieśniak, M.
Publikováno v:
Phys. Rev. Lett. 110, 078901 (2013)
We argue that the experiment described in the recent Letter by Zu et al. [Phys. Rev. Lett. 109, 150401 (2012); arXiv:1207.0059v1] does not allow to make conclusions about contextuality, since the measurement of the observables as well as the preparat
Externí odkaz:
http://arxiv.org/abs/1302.0617
Autor:
Barreiro, J. T., Schindler, P., Gühne, O., Monz, T., Chwalla, M., Roos, C. F., Hennrich, M., Blatt, R.
Publikováno v:
Nature Physics 6, 943 (2010)
Multiparticle entanglement leads to richer correlations than two-particle entanglement and gives rise to striking contradictions with local realism, inequivalent classes of entanglement, and applications such as one-way or topological quantum computi
Externí odkaz:
http://arxiv.org/abs/1005.1965
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. A 80, 032324 (2009)
Is the closest product state to a symmetric entangled multiparticle state also symmetric? This question has appeared in the recent literature concerning the geometric measure of entanglement. First, we show that a positive answer can be derived from
Externí odkaz:
http://arxiv.org/abs/0905.4822
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:
J. Phys.: Cond. Mat. 21 395602 (2009)
We investigate the time evolution of entanglement under various models of decoherence: A general heuristic model based on local relaxation and dephasing times, and two microscopic models describing decoherence of electron spin qubits in quantum dots
Externí odkaz:
http://arxiv.org/abs/0809.3561
Publikováno v:
Phys. Rev. A 78, 060301 (2008)
We present a method to determine the decay of multiparticle quantum correlations as quantified by the geometric measure of entanglement under the influence of decoherence. With this, we compare the robustness of entanglement in GHZ-, cluster-, W- and
Externí odkaz:
http://arxiv.org/abs/0805.2873
Publikováno v:
Phys. Rev. A 77, 052317 (2008)
How can we quantify the entanglement in a quantum state, if only the expectation value of a single observable is given? This question is of great interest for the analysis of entanglement in experiments, since in many multiparticle experiments the st
Externí odkaz:
http://arxiv.org/abs/0802.1734