Quantum reflections and the shunting of polariton condensate wave trains: implementation of a logic AND gate

TL;DR

This paper demonstrates how polariton condensate wave trains can be manipulated using tunable barriers to implement an AND logic gate, enabling potential applications in quantum information processing.

Contribution

It introduces a novel method of controlling polariton condensates with tunable barriers to realize an AND logic gate with incoherent inputs.

Findings

Polariton wave trains can be reflected and confined using tunable barriers.

Energy relaxation leads to long-lived coherent ground states.

The system functions as an AND gate with incoherent inputs.

Abstract

We study the dynamics of polariton condensate wave trains that propagate along a quasi one-dimensional waveguide. Through the application of tuneable potential barriers the propagation can be reflected and multiple reflections used to confine and store a propagating state. Energy-relaxation processes allow the delayed relaxation into a long-living coherent ground state. Aside the potential routing of polariton condensate signals, the system forms an AND-type logic gate compatible with incoherent inputs.