Coherent coupling of two semiconducting flux qubits
Marcin Kurpas, Jerzy Dajka, E. Zipper · Journal of Physics Conference Series · 2008
The entanglement of two distant two-level systems (qubits) built on semiconducting quantum rings is discussed. A mechanism of entangling the qubits by swapping is shown to lead to entanglement of subsystems which have never physically interacted. The numerical calculations of linear entropy beeing the entanglement measure are presented.