Dipartimento di Fisica Sapienza Università di Roma
Structured light is attracting significant attention for its diverse applications in both classical and quantum optics. The so-called vector vortex beams display peculiar properties in both contexts due to the nontrivial correlations between optical polarization and orbital angular momentum. Here we demonstrate a new, flexible experimental approach to the classification of vortex vector beams. We … Continua a leggere
Photon indistinguishability plays a fundamental role in information processing, with applications such as linear-optical quantum computation and metrology. It is then necessary to develop appropriate tools to quantify the amount of this resource in a multiparticle scenario. Here we report a four-photon experiment in a linear-optical interferometer designed to simultaneously estimate the degree of indistinguishability … Continua a leggere
The European Research Council (ERC), the body of the European Union that finances projects of excellence addressing frontier research activities, awards the QU-BOSS project of Prof. Fabio Sciarrino with an Advanced Grant of 2.9 million euros. After decades of progress in quantum information science, it is widely expected that in the next few years the … Continua a leggere
Sapienza University of Rome, to preserve the university community’s health, is implementing protective measures issued by the Italian Health Authorities against the COVID-19. Services and educational activities have not been suspended Sapienza University of Rome, to preserve the university community’s health, is implementing the protective measures issued by the Italian Health Authorities against the COVID-19. … Continua a leggere
On 7th of February 2020, Iris, Taira and Emauele have successfully defended their PhD theses under the supervision of Prof. Fabio Sciarrino. Iris discussed her PhD project regarding the “Certification of quantum technologies”. Taira’s thesis was entitled “Photonics quantum walks as test-bed learning protocols” while Emanuele discussed ” Photonic technologies for fundamental tests of quantum … Continua a leggere
Aula Conversi (Dipartimento di Fisica – Ed. G. Marconi) Tuesday 14 January 2020, 16:00 → 18:00 Sapienza Università di Roma. In this talk, we will first introduce the basics of quantum computing using superconducting qubits, focusing on those aspects that are crucial for the implementation of quantum chemistry algorithms. In the second part, I will … Continua a leggere
22 November 2019, h. 15:30, Physics Department, Amaldi Room The public outreach event “Amaldi Research Center – Open Day – Quantum Technologies” has taken place on 22 Novembre 2019 starting from 15. This event was dedicated to the general public from High School. The news on the event has been promoted regularly thorugh different channels, … Continua a leggere
Scaling-up optical quantum technologies requires a combination of highly efficient multi-photon sources and integrated waveguide components. Here, we interface these scalable platforms, demonstrating high-rate three-photon interference with a quantum dot based multi-photon source and a reconfigurable photonic chip on glass. We actively demultiplex the temporal train of single photons obtained from a quantum emitter to … Continua a leggere
Introducing quantum sensors as a solution to real world problems demands reliability and controllability outside of laboratory conditions. Producers and operators ought to be assumed to have limited resources readily available for calibration, and yet, they should be able to trust the devices. Neural networks are almost ubiquitous for similar tasks for classical sensors: here … Continua a leggere
Friday 13th December 2019 at 16:00. Aula Conversi – Ed. Marconi, Sapienza Università di Roma According to quantum theory, the correlations between outcomes of separated experiments violate Bell inequalities (constraints that any local hidden variable model must satisfy). However, these violations are limited. In principle, higher violations could occur. Since these violations have extraordinary technological applications, it is important … Continua a leggere