Energy-time entanglement of quasi-particles in solid-state devices

Valerio Scarani, Nicolas Gisin, Sandu Popescu

Published 2003-07-16, updated 2003-11-26Version 2

We present a proposal for the experimental observation of energy-time entanglement of quasi-particles in mesoscopic physics. This type of entanglement arises whenever correlated particles are produced at the same time and this time is uncertain in the sense of quantum uncertainty, as has been largely used in photonics. We discuss its feasibility for electron-hole pairs. In particular, we argue that the recently fabricated 2DEG-2DHG junctions, irradiated with a continuous laser, behave as "entanglers" for energy-time entanglement.