Nonlinear quantum input-output analysis using Volterra series

Understand

Quantum input-output theory plays a very important role for analyzing the dynamics of quantum systems, especially large-scale quantum networks.

• As an extension of the input-output formalism of Gardiner and Collet, we develop a new approach based on the quantum version of the Volterra series which can be used to analyze nonlinear quantum input-output dynamics.
• By this approach, we can ignore the internal dynamics of the quantum input-output system and represent the system dynamics by a series of kernel functions.
• This approach has the great advantage of modelling weak-nonlinear quantum networks.