Effects of external magnetic field and electronic states on spin-subbands entanglement in a 1D Rashba quantum wire

The entanglement dynamics of spin-subbands states for an electron in a 1-Dimensional isotropic quantum wire, with an applied strong magnetic field and Rashba effect is studied. The parabolic confinement, produced by external gates and effects as a one dimensional isotropic harmonic oscillator, is also included. The measure of entanglement is calculated as functions of time by the von Neumann entropy and the time evolution operator. The results show that, the entanglement between spin and subbands states has different time behaviour whose amplitude and period depends on the initial state of the electron and external magnetic field.

Keywords:

Quantum Wire , Entanglement , Rashba Effect