Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Kiesel T"'
Autor:
Kiesel, T., Vogel, W.
Publikováno v:
Physical Review A 86, 032119 (2012)
We present a method for the experimental measurement of nonclassicality witnesses and demonstrate its application. Our proposal only requires the coherent displacement of the initial state, which can be achieved by overlapping the latter with a coher
Externí odkaz:
http://arxiv.org/abs/1207.6097
Publikováno v:
Physical Review A 86, 042108 (2012)
Although nonclassical quantum states are important both conceptually and as a resource for quantum technology, it is often difficult to test whether a given quantum system displays nonclassicality. A simple method to certify nonclassicality is introd
Externí odkaz:
http://arxiv.org/abs/1207.3314
Autor:
Kiesel, T., Vogel, W.
Publikováno v:
Phys. Rev. A 85, 062106 (2012)
It is shown that a nonclassicality witness, whose expectation value can be measured for all quantum states, can be constructed from every nonclassicality filter. This finding leads to a set of universal witnesses, parameterized by only three real num
Externí odkaz:
http://arxiv.org/abs/1205.2898
Publikováno v:
Phys. Rev. Lett. 107, 113604 (2011)
Although squeezed states are nonclassical states, so far, their nonclassicality could not be demonstrated by negative quasiprobabilities. In this work we derive pattern functions for the direct experimental determination of so-called nonclassicality
Externí odkaz:
http://arxiv.org/abs/1105.4591
Publikováno v:
Phys. Rev. A 83, 032116 (2011)
We report the experimental reconstruction of a nonclassicality quasiprobability for a single-photon added thermal state. This quantity has significant negativities, which is necessary and sufficient for the nonclassicality of the quantum state. Our m
Externí odkaz:
http://arxiv.org/abs/1101.1741
Publikováno v:
Phys. Rev. A 83, 062319 (2011)
We experimentally generate and tomographically characterize a mixed, genuinely non-Gaussian bipartite continuous-variable entangled state. By testing entanglement in 2$\times$2-dimensional two-qubit subspaces, entangled qubits are localized within th
Externí odkaz:
http://arxiv.org/abs/1012.0686
Autor:
Kiesel, T., Vogel, W.
Publikováno v:
Phys. Rev. A 82, 032107 (2010)
Necessary and sufficient conditions for the nonclassicality of bosonic quantum states are formulated by introducing nonclassicality filters and nonclassicality quasiprobability distributions. Regular quasiprobabilities are constructed from characteri
Externí odkaz:
http://arxiv.org/abs/1004.0788
We experimentally examine the nonclassical character of a class of non-Gaussian states known as phase-diffused squeezed states. These states may show no squeezing effect at all, and therefore provide an interesting example to test nonclassicality cri
Externí odkaz:
http://arxiv.org/abs/0812.3015
Publikováno v:
Physical Review A 78, 021804 R (2008)
A quantum state is nonclassical if its Glauber-Sudarshan P function fails to be interpreted as a probability density. This quantity is often highly singular, so that its reconstruction is a demanding task. Here we present the experimental determinati
Externí odkaz:
http://arxiv.org/abs/0804.1016
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.