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CORDIS

PHOTONICS QUANTUM SAMPLING MACHINE

Deliverables

Efficient calibration toolbox for complex reconfigurable interferometers

Calibration of complex reconfigurable circuits represents a progressively demanding task when the size of system increases given the large number of integrated components Different techniques for the characterization of large size integrated systems will be developed and tested in order to provide an efficient toolbox to calibrate and program the operation of the reconfigurable interferometers

Robustness and tolerance to fabrication errors

The sampling protocols we will be implementing will be realized on the noisy intermediate scale NISQ devices we will build Theoretical support for these applications will be provided by simulations and analytical studies to characterize the noise tolerances that are required for different applications The errors arise from photon loss limited fabrication accuracy and limited photon indistinguishability so we will need to investigate how these different sources of error impact the sampling tasks

Architecture for femtosecond laser-written platform

Report on the definition of the most appropriate architecture for integrated circuits based on the laserwriting technology for manipulation of multiphoton states Peculiar properties of the fabrication technique such as polarization control and threedimensional capabilities will be included in the analysis

Classification of sampling tasks with identification of estimators

Report on the classification of variations of sampling tasks achievable with linear optics and equivalences between them These include Boson Sampling BS Scattershot BS Driven BS Gaussian BS nonlocal BS New schemes will also be described such as sampling with inputs consisting of photon number superpositions We will characterize the enhancement provided by nonlinearities at the fewphoton level via the postselection overhead induced by a linearoptical simulation of the nonlinear process

Development and classification of HQC based on non-adaptive linear optics

Report mapping the requirements for initial proof of principle demonstrations of hybrid quantum computation HPC applications suitable for nonadaptive photonic quantum sampling machines Monte Carlo integration MaxHaf approximate optimization identification of dense subgraphs Classification of tasks with the resources necessary for proofofprinciple demonstrations amount and accuracy of squeezing parameter in inputs complexity of the linear interferometer design postselection overhead number of different devices required alternatively the desired level of parameter tunability

Architecture for silicon nitride platform

Report on the definition of the most appropriate architecture for integrated circuits based on the silicon nitride platform for manipulation of multiphoton states Peculiar properties of the fabrication technique which enables circuits with a large number of integrated passive and active elements will be included in the analysis

Set of stringent validation tests for genuine multiphoton interference

Set of stringent validation tests for genuine multiphoton interference Provide algorithms which determine whether multiphoton interference takes place in the interferometer based on the measured output statistics Losses and imperfection due to fabrication errors will be included in the analysis

Data Management Plan

A structured Data Management Plan will be prepared and will include the best standards for the generated data and assess their suitability for sharing and reuse in accordance with official guidelines

Public website

A dedicated website will be developed both as a mean of public dissemination of the project results to the scientific community the potential investors as well as to the general public It will include public pages with information on the project and its results sections dedicated to It will be regularly updated with project results publications outreach activities deliverables etc

Publications

Calibration of Multiparameter Sensors via Machine Learning at the Single-Photon Level

Author(s): Valeria Cimini, Emanuele Polino, Mauro Valeri, Ilaria Gianani, Nicolò Spagnolo, Giacomo Corrielli, Andrea Crespi, Roberto Osellame, Marco Barbieri, Fabio Sciarrino
Published in: Physical Review Applied, Issue 15/4, 2021, Page(s) 044003, ISSN 2331-7019
Publisher: American Physical Society
DOI: 10.1103/physrevapplied.15.044003

Characterization of multimode linear optical network

Author(s): F. Hoch, T. Giordani, N. Spagnolo, A. Crespi, R. Osellame, F. Sciarrino
Published in: Advanced Photonics Nexus, Issue 2, 016007, 2023, ISSN 2791-1519
Publisher: SPIE Digital Library
DOI: 10.1117/1.apn.2.1.016007

Spin-orbit maximally discordant mixed states

Author(s): D. G. Braga; I. Fonseca; W. F. Balthazar; M. S. Sarandy; J. A. O. Huguenin
Published in: Phys. Rev. A, Issue 106, 062403, 2022, ISSN 2469-9934
Publisher: American Physical Society
DOI: 10.48550/arxiv.2212.03579

Quantum circuit compilation and hybrid computation using Pauli-based computation

Author(s): F. C. R. Peres, E. F. Galvão
Published in: Quantum, Issue 7, 1126, 2023, ISSN 2521-327X
Publisher: Quantum the open journal for quantum science
DOI: 10.22331/q-2023-10-03-1126

Non-linear Boson Sampling

Author(s): N. Spagnolo, D. J. Brod, E. F. Galvão, F. Sciarrino
Published in: npj Quantum Inf, Issue 9, 3, 2023, ISSN 2056-6387
Publisher: Springer Nature Limited
DOI: 10.1038/s41534-023-00676-x

Bright Polarized Single-Photon Source Based on a Linear Dipole

Author(s): S. E. Thomas, M. Billard, N. Coste, S. C. Wein, Priya, H. Ollivier, O. Krebs, L. Tazaïrt, A. Harouri, A. Lemaitre, I. Sagnes, C. Anton, L. Lanco, N. Somaschi, J. C. Loredo, P. Senellart
Published in: Physical Review Letters, Issue 126/23, 2021, Page(s) 233601, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.126.233601

Micro-opto-mechanical glass interferometer for megahertz modulation of optical signals

Author(s): R. Memeo, A. Crespi, and R. Osellame.
Published in: Optica, Issue 11, 2024, Page(s) 178-183, ISSN 2334-2536
Publisher: Optica Publishing Group
DOI: 10.1364/optica.506669

Experimental multiparameter quantum metrology in adaptive regime

Author(s): M. Valeri, V. Cimini, S. Piacentini, F. Ceccarelli, E. Polino, F. Hoch, G. Bizzarri, G. Corrielli, N. Spagnolo, R. Osellame, F. Sciarrino
Published in: Physical Review Research, Issue 5, 013138, 2023, ISSN 2643-1564
Publisher: American Physical Society
DOI: 10.1103/physrevresearch.5.013138

Experimental investigation of Bayesian bounds in multiparameter estimation

Author(s): S. E. D’Aurelio, M. Valeri, E. Polino, V. Cimini, M. Barbieri, G. Corrielli, A. Crespi, R. Osellame, F. Sciarrino, N. Spagnolo
Published in: Quantum Science and Technology, Issue 7, 025011, 2022, ISSN 2058-9565
Publisher: IOP Publishing
DOI: 10.1088/2058-9565/ac5124

Reconfigurable continuously-coupled 3D photonic circuit for Boson Sampling experiments

Author(s): F. Hoch, S. Piacentini, T. Giordani, Z.N. Tian, M. Iuliano, C. Esposito, A. Camillini, G. Carvacho, F. Ceccarelli, N. Spagnolo, A. Crespi, F. Sciarrino, R. Osellame
Published in: npj Quantum Information, Issue 8, 5, 2022, ISSN 2056-6387
Publisher: Springer Nature Limited
DOI: 10.1038/s41534-022-00568-6

Three-Dimensional Electrical Control of the Excitonic Fine Structure for a Quantum Dot in a Cavity

Author(s): H. Ollivier, P. Priya, A. Harouri, I. Sagnes, A. Lemaître, O. Krebs, L. Lanco, N. D. Lanzillotti-Kimura, M. Esmann, and P. Senellart
Published in: Phys. Rev. Lett., Issue 129, 057401, 2022, ISSN 1079-7114
Publisher: American Physical Society
DOI: 10.1103/physrevlett.129.057401

Low-power programmable integrated photonic circuits fabricated by femtosecond laser micromachining

Author(s): C. Pentangelo, F. Ceccarelli, S. Piacentini, S. Atzeni, A. Crespi, R. Osellame
Published in: Il Nuovo Cimento, Issue 6, 2022, ISSN 1826-9885
Publisher: SIF, Bologna
DOI: 10.1393/ncc/i2022-22209-2

Quantifying n-Photon Indistinguishability with a Cyclic Integrated Interferometer

Author(s): M. Pont, R. Albiero, S. E. Thomas, N. Spagnolo, F. Ceccarelli, G. Corrielli, A. Brieussel, N. Somaschi, H. Huet, A. Harouri, A. Lemaître, I. Sagnes, N. Belabas, F. Sciarrino, R. Osellame, P. Senellart, A. Crespi
Published in: Phys. Rev. X, Issue 12, 031033, 2022, ISSN 2160-3308
Publisher: American Physical Society
DOI: 10.1103/physrevx.12.031033

Toward higher integration density in femtosecond-laser-written programmable photonic circuits

Author(s): R. Albiero, C. Pentangelo, M. Gardina, S. Atzeni, F. Ceccarelli, R. Osellame
Published in: Micromachines, Issue 13(7), 1145, 2022, ISSN 2072-666X
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/mi13071145

Progress toward practical quantum cryptanalysis by variational quantum cloning

Author(s): Brian Coyle; Mina Doosti; Elham Kashefi; Niraj Kumar
Published in: Phys. Rev. A, Issue 105, 042604, 2022, ISSN 2469-9934
Publisher: American Physical Society
DOI: 10.48550/arxiv.2012.11424

Universal photonic processors fabricated by femtosecond laser writing

Author(s): C. Pentangelo, F. Ceccarelli, S. Piacentini, R. Albiero, E. Urbinati, N. Di Giano, S. Atzeni, A. Crespi, and R. Osellame
Published in: Proceedings Volume 12004, Integrated Optics: Devices, Materials, and Technologies XXVI, Issue 120040B, 2022
Publisher: SPIE.
DOI: 10.1117/12.2608132

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