ﻻ يوجد ملخص باللغة العربية
Local available quantum correlations (LAQC), as defined by Mundarain et al., are analyzed for two subsets of 2-qubit X states. We start by studying X-states that are symmetric under the exchange of subsystems, that is, those with the same non-null local Bloch vector. We also analyze the subset of states that are anti-symmetric under subsystem exchange, that is, those that have non-null local Bloch vectors with an equal magnitude but opposite direction. We present various examples and compare the obtained results to concurrence as an entanglement measure and with quantum discord. We have also included markovian decoherence, with the analysis of amplitude damping decoherence for Werner states. As was previously observed for depolarization and phase damping decoherence, LAQC did not exhibit sudden death behavior for Werner states under amplitude damping decoherence.
The experimental results obtained for the magneto-transport in the InGaAs/InAlAs double quantum wells (DQW) structures of two different shapes of wells are reported. The beating-effect occurred in the Shubnikov-de Haas (SdH) oscillations was observed
Analytic quantifiers of the symmetric quantum discord for two-qubit X type states and block-diagonal states and the symmetric measurement induced nonlocality for any two qubit states are established on the basis of the quantum skew information.
We investigate genuinely entangled $N$-qubit states with no $N$-partite correlations in the case of symmetric states. Using a tensor representation for mixed symmetric states, we obtain a simple characterization of the absence of $N$-partite correlat
The symmetric collective states of an atomic spin ensemble (i.e., many-body states that are invariant under particle exchange) are not preserved by decoherence that acts identically but individually on members of the ensemble. We develop a class of c
We consider universal approximations of symmetric and anti-symmetric functions, which are important for applications in quantum physics, as well as other scientific and engineering computations. We give constructive approximations with explicit bound