Local quantum uncertainty of SU(2) invariant states
arXiv:1406.2723 · doi:10.3938/jkps.67.2033
Abstract
In this paper, we investigated quantum correlation in SU (2) invariant quantum spin systems by local quantum uncertainty(LQU). These states are invariant under global rotations of both subsystems and in real physical systems, such states arise from thermal equilibrium states of isotropic spin systems. We derive an analytic expression for the LQU of (2j +1)*2 and (2j +1)*3 quantum spin systems with SU (2) symmetry.
12 pages, 5 figures. arXiv admin note: text overlap with arXiv:1304.7019, arXiv:1307.3468 by other authors
References in corpus (12)
- Necessary and sufficient condition for non-zero quantum discord
- Experimental quantum computing without entanglement
- Interpreting quantum discord through quantum state merging
- Operational interpretations of quantum discord
- Quantum discord bounds the amount of distributed entanglement
- Quantum discord as a resource for quantum cryptography
- Quantum cost for sending entanglement
- Quantum discord and remote state preparation
- Entanglement in SU(2)-invariant quantum systems: The positive partial transpose criterion and others
- Quantum discord of SU(2) invariant states
- Relative entropy of entanglement of rotationally invariant states
- Lower bound of local quantum uncertainty for high-dimensional bipartite quantum systems