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- Alessandra Avella, Ivano Ruo-Berchera, Ivo Pietro Degiovanni, Giorgio Brida, Marco Genovese
- Optics letters
- 2016

We show how the same setup and procedure, exploiting spatially multimode quantum correlations, allows the absolute calibration of an electron-multiplying charge-coupled (EMCCD) camera from the analog regime down to the single-photon-counting level, just by adjusting the brightness of the quantum source. At the single-photon level, an EMCCD can be operated… (More)

- Francesco Piacentini, Moran Levi, +6 authors Marco Genovese
- Optics letters
- 2015

Here we present a reconstruction of the positive operator-value measurement of a photon-number-resolving detector comprised of three 50∶50 beam-splitters in a tree configuration, terminated with four single-photon avalanche detectors. The four detectors' outputs are processed by an electronic board that discriminates detected photon number states from 0 to… (More)

- Francesco Piacentini, Alessandra Avella, +8 authors Marco Genovese
- Physical review letters
- 2016

Weak value measurements have recently given rise to a great amount of interest in both the possibility of measurement amplification and the chance for further quantum mechanics foundations investigation. In particular, a question emerged about weak values being proof of the incompatibility between quantum mechanics and noncontextual hidden variables… (More)

- Francesco Piacentini, Moran Levi, +6 authors Brandon Rodenburg
- 2015

Measurements are the very basis of Physics. In quantum mechanics they assume even a more fundamental role since observables can have undetermined values that “collapse” on a specific one only when a strong measurement (described by a projection operator) is done. Furthermore, a crucial feature of quantum measurement is that measuring one observable… (More)

- Francesco Piacentini, Alessandra Avella, +9 authors Marco Genovese
- Physical review letters
- 2016

One of the most intriguing aspects of quantum mechanics is the impossibility of measuring at the same time observables corresponding to noncommuting operators, because of quantum uncertainty. This impossibility can be partially relaxed when considering joint or sequential weak value evaluation. Indeed, weak value measurements have been a real breakthrough… (More)

- Alessandra Avella
- The American journal of nursing
- 1952

- Alessandra Avella, Giorgio Brida, +10 authors Malcolm E. White
- Optics express
- 2011

Well characterized photon number resolving detectors are a requirement for many applications ranging from quantum information and quantum metrology to the foundations of quantum mechanics. This prompts the necessity for reliable calibration techniques at the single photon level. In this paper we propose an innovative absolute calibration technique for… (More)

- Alessandra Avella, Greg Recine
- Il Policlinico. Sezione medica
- 1960

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