Testing Bell's inequality with ballistic electrons in semiconductors - art. no. 050101

We propose an experiment to test Bell's inequality violation in condensed-m atter physics. WE show how to generate, manipulate, and detect entangled st ates using ballistic electrons in Coulomb-coupled semiconductor quantum wir es. Due to its simplicity (only five gates are required to prepare entangle d states and to test Bell's inequality), the proposed semiconductor-based s cheme can be implemented with currently available technology. Moreover, its basic ingredients may play a role towards large-scale quantum-information processing solid-state devices.