Quantum Lab

Today, 11th of February 2021, the world celebrates the sixth edition of the International Day of Women and Girls in Science, established by the United Nations General Assembly in 2015. Its aim is to increase awareness of the critical role of women within the scientific community and to promote their full and equal access to … Continua a leggere

The Quantum Lab has just published in the journal Science Bulletin a News and Views paper on the recent quantum computational advantage demonstration reported in Science from Prof. Jian-Wei Pan’s team in China. Here is reference to the Science paper https://science.sciencemag.org/content/early/2020/12/02/science.abe8770 News and Views on Science Bulletin F. Sciarrino, N. Spagnolo, The race towards quantum … Continua a leggere

Optical interrogation of tissues is broadly considered in biomedical applications. Nevertheless, light scattering by tissue limits the resolution and accuracy achieved when investigating sub-surface tissue features. Light carrying optical angular momentum or complex polarization profiles, offers different propagation characteristics through scattering media compared to light with unstructured beam profiles. Here we discuss the behaviour of … Continua a leggere

Computer quantistici: istruzioni per l’usoBenvenuti nell’era della quantum supremacy Incontro con Fabio Sciarrino, modera Leonardo De Cosmo29 ottobre, ore 18:30 Delle tecnologie quantistiche si parla ormai ovunque ma è complicato riuscire a capirne davvero qualcosa. In un dialogo semiserio, un giornalista scientifico e uno dei più autorevoli ricercatori del settore cercheranno di raccontare cosa sono … Continua a leggere

Quantum communication networks involving the preparation, sharing, and measurement of quantum states are ubiquitous in quantum information. Of particular relevance within this context is to understand under which conditions a given quantum resource can give rise to correlations incompatible with a classical explanation. Here we consider the so-called prepare-and-measure scenario, in which a quantum or … Continua a leggere

Self-testing is a method of quantum state and measurement estimation that does not rely on assumptions about the inner working of the used devices. Its experimental realization has been limited to sources producing single quantum states so far. In this work, we experimentally implement two significant building blocks of a quantum network involving two independent … Continua a leggere

The PHOQUSING (PHOtonic Quantum SamplING machine) project, coordinated by the Quantum Information Lab, just started on 1 September 2020.The project was awarded a grant of more than 3 million Euros under the Horizon 2020 programme of the European Commission. The project will allow to join the forces of leading European Groups involved in quantum information … Continua a leggere

Quantum metrology is one of the most relevant applications of quantum information theory to quantum technologies. Here, quantum probes are exploited to overcome classical bounds in the estimation of unknown parameters. In this context, phase estimation, where the unknown parameter is a phase shift between two modes of a quantum system, is a fundamental problem. … Continua a leggere

Multi-particle interference is a key resource for quantum information processing, as exemplified by Boson Sampling. Hence, given its fragile nature, an essential desideratum is a solid and reliable framework for its validation. However, while several protocols have been introduced to this end, the approach is still fragmented and fails to build a big picture for … Continua a leggere