Entanglement and transport anomalies in nanowires
A shallow potential well in a near-perfect quantum wire will bind a single electron and behave like a quantum dot, giving rise to spin-dependent resonances of propagating electrons due to Coulomb repulsion and Pauli blocking. It is shown how this may be used to generate full entanglement between static and flying spin-qubits near resonance in a two-electron system via singlet or triplet spin filtering. For a quantum wire with many electrons, the same pairwise scattering may be used to explain conductance, thermopower and shot noise anomalies, provided the temperature/energy scale is sufficiently high for Kondo-like many-body effects to be negligible.
Journal of Physics Condensed Matter
- Pub Date:
- April 2008
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect;
- Condensed Matter - Strongly Correlated Electrons
- '0.7 feature' issue