Results 31 to 40 of about 4,887 (84)
Measurement problem and local hidden variables with entangled photons
Open Physics, 2017 It is shown that there is no remote action with polarization measurements of photons in singlet state. A model is presented introducing a hidden parameter which determines the polarizer output.
Muchowski Eugen
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, 2013 In a recent article [http://dx.doi.org/10.1103/PhysRevA.87.022340, Phys. Rev. A 87, 022340 (2013)], Yan et al have studied geometric discord for a well known class of bound entangled states.
Parashar, Preeti, Rana, Swapan
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Detecting entanglement of unknown quantum states with random measurements
New Journal of Physics, 2015 In quantum information theory, the reliable and effective detection of entanglement is of paramount importance. However, given an unknown state, assessing its entanglement is a challenging task.
Jochen Szangolies +2 more
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Comment on ``Geometric phase of entangled spin pairs in a magnetic field''
, 2007 The degree of entanglement between two spins may change due to interaction. About this we find that a wrong result in a recent work by Ge and Wadati [Phys. Rev.
Xiang, Yang, Xiong, Shi-Jie
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Entangled states of two quantum dots mediated by Majorana fermions
New Journal of Physics, 2016 With the assistance of a pair of Majorana fermions, we propose schemes to entangle two quantum dots by Lyapunov control in the charge and spin degrees of freedom.
Z C Shi, W Wang, X X Yi
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Comment on "Single-mode excited entangled coherent states"
, 2009 In Xu and Kuang (\textit{J. Phys. A: Math. Gen.} 39 (2006) L191), the authors claim that, for single-mode excited entangled coherent states $| \Psi_{\pm}(\alpha,m)>$, \textquotedblleft the photon excitations lead to the decrease of the concurrence in the
Hong-chun Yuan +6 more
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, 2010 The paper [Phys. Lett. A 373 (2009) 3610] by D.-C. Li analyzes the transformation between two-qubit mixed states by local operations and classical communication. We show that the proof of the main theorem, Theorem 2.6 in [Phys. Lett.
Bennett +8 more
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Hardy-type nonlocality proof for two maximally entangled particles
, 2004 We present a variation on a gedanken experiment of Hardy [Phys. Rev. Lett. 68 (1992) 2981] that allows, for the first time, a Hardy-type nonlocality proof for two maximally entangled particles in a four-dimensional Hilbert space.Comment: 9 pages, 1 ...
Bell +7 more
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Entanglement and extreme spin squeezing of unpolarized states
New Journal of Physics, 2017 We present criteria to detect the depth of entanglement in macroscopic ensembles of spin- j particles using the variance and second moments of the collective spin components.
Giuseppe Vitagliano +5 more
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How many ebits can be unlocked with one classical bit?
, 2007 We find an upper bound on the rate at which entanglement can be unlocked by classical bits. In particular, we show that for quantum information sources that are specified by ensambles of pure bipartite states, one classical bit can unlock at most one ...
Gour, Gilad
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