Towards Quantum Integrated Information Theory
arXiv Preprint Archive June 4, 2018 Paolo Zanardi, Michael Tomka, Lorenzo Campos Venuti
Integrated Information Theory (IIT) provides a mathematical measure, Φ (phi), of how much a network's cause/effect structure is integrated—not reducible to separate parts. This work extends IIT to networks of quantum systems, identifying phases ranging from dis-integrated (Φ = 0) to holistic (where log Φ grows extensively with system size) and studying transitions between them.