Open quantum system identification

TL;DR

This paper presents a method to identify the Markovian dynamics of open quantum systems using limited initial state preparation and partial output information, aiding in the control of quantum devices.

Contribution

It introduces a novel approach for quantum system identification under practical constraints of initialization and measurement.

Findings

Effective identification of open quantum system dynamics demonstrated.

Applicable to systems with restricted initialisation and partial output data.

Facilitates better control of quantum information devices.

Abstract

Engineering quantum systems offers great opportunities both technologically and scientifically for communication, computation, and simulation. The construction and operation of large scale quantum information devices presents a grand challenge and a major issue is the effective control of coherent dynamics. This is often in the presence of decoherence which further complicates the task of determining the behaviour of the system. Here, we show how to determine open system Markovian dynamics of a quantum system with restricted initialisation and partial output state information.