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pro vyhledávání: '"Neven, Antoine"'
We present verification protocols to gain confidence in the correct performance of the realization of an arbitrary universal quantum computation. The derivation of the protocols is based on the fact that matchgate computations, which are classically
Externí odkaz:
http://arxiv.org/abs/2308.11368
Autor:
Carrasco, Jose, Votto, Matteo, Vitale, Vittorio, Kokail, Christian, Neven, Antoine, Zoller, Peter, Vermersch, Benoît, Kraus, Barbara
We present experimentally and numerically accessible quantities that can be used to differentiate among various families of random entangled states. To this end, we analyze the entanglement properties of bipartite reduced states of a tripartite pure
Externí odkaz:
http://arxiv.org/abs/2212.10181
Autor:
Neven, Antoine, Carrasco, Jose, Vitale, Vittorio, Kokail, Christian, Elben, Andreas, Dalmonte, Marcello, Calabrese, Pasquale, Zoller, Peter, Vermersch, Benoît, Kueng, Richard, Kraus, Barbara
Publikováno v:
Npj Quantum Inf. 7, 152 (2021)
We propose an ordered set of experimentally accessible conditions for detecting entanglement in mixed states. The $k$-th condition involves comparing moments of the partially transposed density operator up to order $k$. Remarkably, the union of all m
Externí odkaz:
http://arxiv.org/abs/2103.07443
Autor:
Vitale, Vittorio, Elben, Andreas, Kueng, Richard, Neven, Antoine, Carrasco, Jose, Kraus, Barbara, Zoller, Peter, Calabrese, Pasquale, Vermersch, Benoit, Dalmonte, Marcello
Publikováno v:
SciPost Phys. 12, 106 (2022)
When a quantum system initialized in a product state is subjected to either coherent or incoherent dynamics, the entropy of any of its connected partitions generically increases as a function of time, signalling the inevitable spreading of (quantum)
Externí odkaz:
http://arxiv.org/abs/2101.07814
Publikováno v:
SciPost Phys. 11, 042 (2021)
Understanding multipartite entanglement is vital, as it underpins a wide range of phenomena across physics. The study of transformations of states via Local Operations assisted by Classical Communication (LOCC) allows one to quantitatively analyse en
Externí odkaz:
http://arxiv.org/abs/2007.06256
Publikováno v:
Phys. Rev. A 98, 062335 (2018)
When some of the parties of a multipartite entangled pure state are lost, the question arises whether the residual mixed state is also entangled, in which case the initial entangled pure state is said to be robust against particle loss. In this paper
Externí odkaz:
http://arxiv.org/abs/1809.00622
Autor:
Neven, Antoine, Bastin, Thierry
Publikováno v:
J. Phys. A: Math. Theor. 51, 315305 (2018)
We use the generalized concurrence approach to investigate the general multipartite separability problem. By extending the preconcurrence matrix formalism to arbitrary multipartite systems, we show that the separability problem can be formulated equi
Externí odkaz:
http://arxiv.org/abs/1806.11071
Publikováno v:
Phys. Rev. A 94, 052332 (2016)
For two symmetric quantum states one may be interested in maximizing the overlap under local operations applied to one of them. The question arises whether the maximal overlap can be obtained by applying the same local operation to each party. We sho
Externí odkaz:
http://arxiv.org/abs/1606.02675
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