Some Quantum Computation Preliminaries

Luca Tosi, Nicola Anselmi, Alessandro Polo +1 more

The analysis of the power pattern generated from a uniform linear array is here carried in the Quantum Computing (QC) framework. The formulation and the analysis method based on the quantum Fourier transform (QFT) algorithm and the values observable at the output of the quantum computation are presented. A preliminary proof-of-concept result is reported and analyzed to point out the peculiarities and the advantages of the proposed method.

Qiujie Sun

Ermanno Petrocchi, Simona Tiribelli, Filippo Caruso

The paper analyses the environmental sustainability of quantum computing, and quantum AI in particular. This analysis addresses a critical gap in both the literature and policy discussion. Particularly, policy documents on quantum technologies and quantum computing poorly consider the sustainability requirement. When they do so, the focus is mainly on how quantum innovation can help us create more sustainable solutions and achieve the UN Sustainable Development Goals more easily. Rarely, do they scrutinise the intrinsic sustainability of quantum computing and quantum AI systems. The paper proposes a way to fill this gap by comparing the sustainability challenges of quantum computing with those of AI systems: building on this comparison, this work offers a preliminary framework for assessing the environmental sustainability of quantum computing systems.

David Peter Divincenzo

Dongsheng Wang

A preliminary overview of measurement-based quantum computation (QC) in the setting of symmetry and topological (TOP) phases of quantum matter is given. The underlying mechanism for universal QC by teleportation or symmetry are analyzed, with the emphasis on the relation with tensor-network states in the presence of various symmetries. Perspectives are also given for the role of symmetry and phases of quantum matter in measurement-based QC and fault tolerance.