In such a device, retroreflection of the hole from an Andreev reflection process, resulting from an incident electron at energies less than the superconducting gap at one lead, occurs in the second spatially separated normal lead with the same charge transfer as in a normal AR process to a Cooper pair in the superconductor.
In this device, a hole is retroreflected from an Andreev reflection process involving an incident electron with energy less than the superconducting gap at one lead into the second spatially separated normal lead, resulting in the same charge transfer as in a conventional Anderson-Rashba (AR) process where a Cooper pair forms in the superconductor.