The Journey of Quantum Information Technology

Stephen M. Barnett, Almut Beige, Artur Ekert +17 more

Songbo Xie, Daniel Younis, Yuhan Mei +1 more

Genuine multipartite entanglement is crucial for quantum information and related technologies, but quantifying it has been a long-standing challenge. Most proposed measures do not meet the "genuine" requirement, making them unsuitable for many applications. In this work, we propose a journey toward addressing this issue by introducing an unexpected relation between multipartite entanglement and hypervolume of geometric simplices, leading to a tetrahedron measure of quadripartite entanglement. By comparing the entanglement ranking of two highly entangled four-qubit states, we show that the tetrahedron measure relies on the degree of permutation invariance among parties within the quantum system. We demonstrate potential future applications of our measure in the context of quantum information scrambling within many-body systems.

Davide La Torre, Faisal Shah Khan

Y. Hirayama

Faisal Shah Khan, Davide La Torre

As we conclude this exploration into the fascinating realm of quantum information technology, it’s evident that we are at the beginning of a transformative era. The journey through these pages has unveiled the profound potential of quantum computing to revolutionize the way we process, store, and transmit information. From quantum computing’s promise of solving complex problems at unprecedented speeds to quantum cryptography’s ability to secure communications with unbreakable encryption, the possibilities are limitless. This book has also unveiled the importance and significance of quantum for business leaders and managers.

Elena Yndurain

W elcome to Quantum Computing Strategy: Foundations and Applicability , a journey into one of the most enigmatic and transformative technologies of our age. In these pages, we will explore the world of quantum computing, a field that challenges our traditional notions of computation and information processing. This book doesn’t require advanced mathematical or physics knowledge. It is written for a broad audience, including technology enthusiasts, professionals exploring quantum computing applications in their fields, and policymakers seeking to understand the strategic importance of this emerging technology.