SatDisQCo Feasibility study of distributed quantum computing enabled by satellite communication

Quantum computing promises to revolutionize a number of fields by solving certain computational tasks faster than what can be achieved with classical computers. To fully achieve this ambitious promise, it is crucial to interconnect Quantum Processing Units (QPUs) in order to run algorithms cooperatively in a distributed fashion, tackling problems beyond the capability of a single QPU and thus enabling a whole new range of applications and use cases. In this context, a paramount problem is how to efficiently distribute entanglement over large distances in order to interconnect faraway QPU. In this project, we are going to study architectures for distributed quantum computing (DQC) enabled by space connectivity. To this aim, we will survey different use cases, quantum algorithms and their suitability for parallelization. We will also address different qubit platforms and other relevant components, such as entangled photon sources, transducers, and quantum memories. We will run extensive simulations collecting all these ingredients together to identify an architecture supporting as many use cases as possible and to formulate a technology roadmap for future developments.