Translator Disclaimer
26 September 2013 Some recent progresses in quantum tomography realised at INRIM
Author Affiliations +
We present some Quantum Tomography related results recently obtained in the Quantum Optics labs of the National Institute of Metrological Research (INRIM). Initially we describe the first experimental implementation of a new protocol for the reconstruction of a photon-number-resolving (PNR) detector’s POVM (Positive Operator-Valued Measure): such a protocol, exploiting the strong quantum correlations of an ancillary state, results more robust and efficient than its classical counterparts. The second part of the paper focuses on the quantum characterization of a transition-edge sensor (TES) based PNR detector, i.e. the experimental tomography of the POVM of a TES, with a method based on a quorum of coherent probes: we show the reconstruction of the POVM elements up to 11 detected photons and 100 incoming photons, demonstrating the linearity of such a device. Finally, we present a method for the experimental reconstruction of the modal structure of multimode optical fields exploiting a single measurement of higher-order photon number autocorrelation functions. We show our reconstructions of up to three different modes per optical state, demonstrating the excellent agreement with the theoretical predictions and the robustness of our method itself.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F. Piacentini, E. A. Goldschmidt, Maria G. Mingolla, I. P. Degiovanni, M. Gramegna, I. R. Berchera, S. V. Polyakov, S. Peters, S. Kück, E. Taralli, L. Lolli, M. Rajteri, M. G. A. Paris, A. Migdall, G. Brida, and M. Genovese "Some recent progresses in quantum tomography realised at INRIM", Proc. SPIE 8875, Quantum Communications and Quantum Imaging XI, 88750G (26 September 2013);


HgCdTe APDs for low-photon number IR detection
Proceedings of SPIE (January 27 2017)
Quantum communication and single-photon technologies
Proceedings of SPIE (June 29 2001)
Continuous-variable experiments with optical qubits
Proceedings of SPIE (January 11 2005)
Entanglement enhanced quantum sensing
Proceedings of SPIE (January 22 2010)

Back to Top