BIPM Workshop “The Quantum Revolution in Metrology” COMPILATION OF ABSTRACTS

The present Photonic era is based on rapidly developing optical technology and photon devices, with special impact on the fields of quantum communication, quantum computing, quantum enhanced measurements beyond the standard quantum limit, and optical radiometry. These applications require quantum optical metrology based on new standards and calibration chains, together with new metrics. In particular, standards are required which operate in the single-photon regime and are embedded in quantum optical technologies. Moreover, quantum enhanced optical measurements e.g. the exploitation of quantum phenomena such as entanglement and other non-classical state correlations, are among the challenges to yield sensitivity and accuracy better than purely classical approaches. The goal is to develop theoretical and technological capabilities for operating optical systems (e.g. sub-shot noise imaging, ghost imaging, phase measurement) or opto-mechanical systems (micro-cavities), in the quantum regime, beyond the Standard Quantum Limit. A single-emitter sub-shot noise quantum light source: press a button and get one photon Author and Speaker: Stephan Götzinger, Max Planck Institute for Light, Germany Speaker email: stephan.goetzinger(at)mpl.mpg. de Abstract: In this talk I will discuss our recent progress towards a deterministic single-photon source. By embedding a single molecule into a metallo-dielectric antenna we obtained the most regulated stream of single photons reported to date. Such a source might have potential applications in the calibration of photodetectors and could lead to the redefinition of the candela. In this talk I will discuss our recent progress towards a deterministic single-photon source. By embedding a single molecule into a metallo-dielectric antenna we obtained the most regulated stream of single photons reported to date. Such a source might have potential applications in the calibration of photodetectors and could lead to the redefinition of the candela. Quantum imaging: challenges and perspectives in radiometry and biophotonics Author and Speaker: Ivano Ruo-Berchera, INRIM, Italy Speaker email: i.ruoberchera(at)inrim.it Abstract: Non-classical correlations in optical beams offer unprecedented opportunity of reducing the uncertainty of measurements especially when a low photon flux, down to the single photon level, is used. We review the principles and the state-of-the-art of quantum imaging and sensing techniques with emphasis on the applications to radiometry and biophotonics. In particular, non-classical correlations could represent a cutting-edge tool for investigating phototransduction processes at the fundamental level, such as the one responsible of human vision. Non-classical correlations in optical beams offer unprecedented opportunity of reducing the uncertainty of measurements especially when a low photon flux, down to the single photon level, is used. We review the principles and the state-of-the-art of quantum imaging and sensing techniques with emphasis on the applications to radiometry and biophotonics. In particular, non-classical correlations could represent a cutting-edge tool for investigating phototransduction processes at the fundamental level, such as the one responsible of human vision.