Photon exchange and entanglement formation during transmission through a rectangular quantum barrier
Georg Sulyok, Katharina Durstberger-Rennhofer, Johann Summhammer · Physics Letters A · 2015
When a quantum particle traverses a rectangular potential created by a quantum field both photon exchange and entanglement between particle and field take place. We present the full analytic solution of the Schrödinger equation of the composite particle-field system allowing investigation of these phenomena in detail and comparison to the results of a classical field treatment. Besides entanglement formation, remarkable differences also appear with respect to the symmetry between energy emission and absorption, resonance effects and if the field initially occupies the vacuum state.