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66 papers · 1 filter
Anderson Localization and Polarization
M. Kishi, Y. Hatsugai
Effects of randomness have supplied fundamental problems in condensed matter physics and localization due to interference of quantum mechanical electrons are well studied as the An…
A note on quantum entropy inequalities and channel capacities
Heng Fan
Quantum entropy inequalities are studied. Some quantum entropy inequalities are obtained by several methods. For entanglement breaking channel, we show that the entanglement-assist…
Temperature Dependent Magnetic Anisotropy in (Ga,Ma)As Layers
M. Sawicki, F. Matsukura, A. Idziaszek +6
It is demonstrated by SQUID magnetization measurements that (Ga,Mn)As films can exhibit rich characteristics of magnetic anisotropy depending not only to the epitaxial strain but b…
Anisotropic Optic Conductivities due to Spin and Orbital Orderings in LaVO3 and YVO3: First-Principles Studies
Zhong Fang, Naoto Nagaosa, Kiyoyuki Terakura
The anisotropy of low energy (05eV) optical excitations in strongly correlated transition-metal oxides is closely related to the spin and orbital orderings. The recent succes…
Violation of local uncertainty relations as a signature of entanglement
Holger F. Hofmann, Shigeki Takeuchi
Entangled states represent correlations between two separate systems that are too precise to be represented by products of local quantum states. We show that this limit of precisio…
Practical scheme for the optimal measuremnet in quantum interferometric devices
Masahiro Takeoka, Masashi Ban, Masahide Sasaki
We apply a Kennedy-type detection scheme, which was originally proposed for a binary communications system, to interferometric sensing devices. We show that the minimum detectable…