Zobrazeno 1 - 10
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pro vyhledávání: '"Roa, L."'
In reliability engineering, we need to understand system dependencies, cause-effect relations, identify critical components, and analyze how they trigger failures. Three prominent graph models commonly used for these purposes are fault trees (FTs), d
Externí odkaz:
http://arxiv.org/abs/2310.04448
Sewer pipe network systems are an important part of civil infrastructure, and in order to find a good trade-off between maintenance costs and system performance, reliable sewer pipe degradation models are essential. In this paper, we present a large-
Externí odkaz:
http://arxiv.org/abs/2310.01888
Currently the entanglement of formation can be calculated analytically for mixed states in a $(2\otimes2)$-dimensional Hilbert space. For states in higher dimensional Hilbert space a closed formula for quantifying entanglement does not exist. In this
Externí odkaz:
http://arxiv.org/abs/1105.6321
Autor:
Torres-Ruiz, F. A., Aguirre, J., Delgado, A., Neves, L., Lima, G., Pádua, S., Roa, L., Saavedra, C.
In this work we propose a probabilistic method which allows an unambiguous modification of two non-orthogonal quantum states. We experimentally implement this protocol by using two-photon polarization states generated in the process of spontaneous pa
Externí odkaz:
http://arxiv.org/abs/0808.1730
We study how the entanglement between two atoms can be created or modified even when they do not interact but when each of them interacts dispersively, i.e., weak and far from the resonance with a single mode of the field. Considering that regime we
Externí odkaz:
http://arxiv.org/abs/quant-ph/0612079
We study the problem of driving a known initial quantum state onto a known pure state without using a unitary evolution. This task can be achieved by means of von Neumann measurement processes, introducing N observables which are consecutively measur
Externí odkaz:
http://arxiv.org/abs/quant-ph/0606086
We study the stability of the coherence of a state of a quantum system under the effect of an interaction with another quantum system at short time. We find an expression for evaluating the order of magnitude of the time scale for the onset of instab
Externí odkaz:
http://arxiv.org/abs/quant-ph/0605254
Autor:
Roa, L., Olivares, G.
We study the problem of driving an unknown initial mixed quantum state onto a known pure state without using unitary transformations. This can be achieved, in an efficient manner, with the help of sequential measurements on at least two unbiased base
Externí odkaz:
http://arxiv.org/abs/quant-ph/0512210
We study the problem of mapping an unknown mixed quantum state onto a known pure state without the use of unitary transformations. This is achieved with the help of sequential measurements of two non-commuting observables only. We show that the overa
Externí odkaz:
http://arxiv.org/abs/quant-ph/0509173
Publikováno v:
Phys. Rev. A 68, 022310 (2003).
Quantum teleportation of qudits is revisited. In particular, we analyze the case where the quantum channel corresponds to a non-maximally entangled state and show that the success of the protocol is directly related to the problem of distinguishing n
Externí odkaz:
http://arxiv.org/abs/quant-ph/0304002