Certification of Gaussian Boson Sampling via graph theory

Gaussian Boson Sampling is a non-universal model for quantum computing inspired by the original formulation of the Boson Sampling problem. Nowadays, it represents a paradigmatic quantum platform to reach the quantum advantage regime in a specific computational model. Indeed, thanks to the implementation in photonics-based processors, the latest Gaussian Boson Sampling experiments have reached a … Continua a leggere

The potential and global outlook of integrated photonics for quantum technologies

Integrated quantum photonics uses classical integrated photonic technologies and devices for quantum applications. As in classical photonics, chip-scale integration has become critical for scaling up and translating laboratory demonstrators to real-life technologies. Integrated quantum photonics efforts are centred around the development of quantum photonic integrated circuits, which can be monolithically, hybrid or heterogeneously integrated. In … Continua a leggere

Experimental test of quantum causal influences

Since Bell’s theorem, it is known that local realism fails to explain quantum phenomena. Indeed, Bell inequality violations manifestly show the incompatibility of quantum theory with classical notions of cause and effect. As recently discovered, however, the instrumental scenario –a pivotal tool in causal inference– allows for nonclassicality signatures going beyond this paradigm. Indeed, if … Continua a leggere