Valentina Parigi

Valentina Parigi



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Valentina Parigi obtained her PhD at LENS (European Laboratory for Non-Linear Spectroscopy) in Florence under the supervision of Marco Bellini. During her PhD she worked on  generation, manipulation and characterization of non-classical states of light and she realized the first experimental test on quantum commutation rules. She then worked on non-linear effects at the single photon level by exploiting the long-range interactions in ensemble of Rydberg atoms,  atomic quantum memories and near-field characterization of disordered nanostructures.

She is Full Professor since 2023 and had been Associate Professor (2015-2023)  in the Quantum Optics group at LKB, working in the Multimode Quantum Optics team.

She is leading the activity on complex quantum networks in a multi-mode continuous-variables scenario, awarded (2018) with an – ERC Consolidator Grant.

Her interests range from the foundations of quantum mechanics to the experimental implementation of basic tools for quantum information technologies.


Memberships and responsibilities

  • Member of the international team organizing the Quantum Science Seminar (2020-2022)
  • Organizer of Complex Systems: Quantum information and computation, satellite conference of the CCS2022 in Complex Systems conference (Palma de Mallorca; October 17 -22, 2022); Organizer of the Scientific Meeting of the Royal Society – Foundations of quantum mechanics and their impact on contemporary society, December 11-12, 2017, London.  Member of the organizing committee of the ICOQC 2018 conference – International Conference on Quantum Computing November 26-30, 2018, Paris. Member of the organizing committee of the European project Open FET QCUMbER- Quantum Controlled Ultrafast Multimode Entanglement and Measurement. Organizer of the Cargese School of Quantum Information and Quantum Technology summer school June 21 – 25, 2021, Cargèse

  • Member of the scientific committee of the conferences: QTech 2018 Quantum technology International conference, September 5-7, 2018, Paris; CEWQO 2018- Central European Workshop on Quantum Optics; quantum information and quantum information thematic committee for CLEO- Laser Science for photonic applications- year 2019 and year 2020. Member of the EQEC/CLEO 2023 committee in Quantum Optics. 

Scientific Track Record and awards

  • Médaille de bronze CNRS 2020
  • Awarded 2018 – ERC Consolidator Grant. Project: COQCOoN: “Continuos Variables Quantum Complex Networks”
  • Emergence CNRS -2016 on “Information quantique optique non-linéaire” – Spectrally broadened optical frequency comb by non-linear photonic crystal fiber for manipulating hundreds of q-modes in quantum information processes. Role in the project: main investigator.
  • Emergence Sorbonne Université 2016 PiCQuNet: Photonic platform for Complex Quantum Networks. Role in the project: main investigator


  • Talent CNRS 2020 – video
  • Quantum flagship quantum technology Education, 2020 European Quantum Week – video
  • Talk KITP Program: Open Quantum System Dynamics: Quantum Simulations Far From Equilibrium April1-Jun7 2019 video
  • BQIT2019 1st -3rd April 2019 Bristol –video


Recent publications:



  • J Henaff, M Ansquer, MC Soriano, R Zambrini, N Treps, V Parigi Optical phase encoding in pulsed approach to reservoir computing arXiv preprint arXiv:2401.14073


  • Xiaoting Gao, Mathieu Isoard, Fengxiao Sun, Carlos E Lopetegui, Yu Xiang, Valentina Parigi, Qiongyi He, Mattia Walschaers Correlation-pattern-based Continuous-variable Entanglement Detection through Neural Networks arXiv preprint arXiv:2310.20570

  • P Stornati, A Acin, U Chabaud, A Dauphin, V Parigi, F Centrone Variational quantum simulation using non-Gaussian continuous-variable systems arXiv preprint arXiv:2310.15919

  • F Centrone, F Grosshans, V Parigi Cost and routing of continuous-variable quantum networks Physical Review A 108 (4), 042615 (2023)

  • Paul Renault, Johannes Nokkala, Ganaël Roeland, Nicolas Y. Joly, Roberta Zambrini, Sabrina Maniscalco, Jyrki Piilo, Nicolas Treps, Valentina Parigi Experimental Optical Simulator of Reconfigurable and Complex Quantum Environment PRX QUANTUM 4 (4), 040310 (2023)

  • V Roman-Rodriguez, D Fainsin, GL Zanin, N Treps, E Diamanti, V Parigi Multimode Squeezed State for Reconfigurable Quantum Networks at Telecommunication Wavelengths arXiv preprint arXiv:2306.07267

  • M Walschaers, B Sundar, N Treps, LD Carr, V Parigi Emergent complex quantum networks in continuous-variables non-Gaussian states Quantum Science and Technology 8 (3), 035009 (2023)

  • LD Carr, V Parigi  Thermal exploration in engine design Science 379 (6636), 984-985 (2023)

  • T Kouadou, F Sansavini, M Ansquer, J Henaff, N Treps, V Parigi Spectrally shaped and pulse-by-pulse multiplexed multimode squeezed states of light APL Photonics 8, 086113 (2023)

  • G Roeland, S Kaali, VR Rodriguez, N Treps, V Parigi Mode-selective single-photon addition to a multimode quantum field  New Journal of Physics 24 (4), 043031 (2022)



  • J. Nokkala, R. Martínez-Peña, G. L. Giorgi, V. Parigi, M. C Soriano, R. Zambrini, Gaussian states of continuous-variable quantum systems provide universal and versatile reservoir computing, Communications Physics volume 4, Article number: 53 (2021)  
  • V. Roman-Rodriguez, B. Brecht, S. Kaali, C. Silberhorn, N. Treps, E. Diamanti, V. Parigi, Continuous variable multimode quantum states via symmetric group velocity matching, New J. Phys. 23 043012 (2021)
  • L. La Volpe, S. De, M.I. Kolobov, V. Parigi, C. Fabre, N. Treps, D.B. Horoshko Spatiotemporal entanglement in a noncollinear optical parametric amplifier, Phys. Rev. Applied 15, 024016 (2021)
  • Bhuvanesh Sundar, Mattia Walschaers, Valentina Parigi and Lincoln D Carr, Response of quantum spin networks to attacksJ. Phys. Complex. 2 035008 (2021)
  • V. Cimini, M. Barbieri, N. Treps, M. Walschaers, and V. Parigi, Neural Networks for Detecting Multimode Wigner Negativity, Phys. Rev. Lett. 125, 160504 (2020)

  • M. Walschaers, V. Parigi, and N. Treps, Practical Framework for Conditional Non-Gaussian Quantum State Preparation, PRX Quantum 1, 020305 (2020)

  • D. Barral, M. Walschaers, K. Bencheikh, V. Parigi, J. A. Levenson, N. Treps, and N. Belabas, Versatile Photonic Entanglement Synthesizer in the Spatial Domain, Phys. Rev. Applied 14, 044025 (2020)

  • F. Sansavini and V. Parigi, Continuous Variables Graph States Shaped as Complex Networks: Optimization and Manipulation, Entropy 22, 26 (2020)
  • L. La Volpe, S. De, T. Kouadou, D. Horoshko, M. I. Kolobov, C. Fabre, V. Parigi, and N.  Trep, Multimode single-pass spatio-temporal squeezing, Optics Express, Vol.28 pp 12385-12394 (2020)
  • F. Arzani, A. Ferraro, V. Parigi, High-dimensional quantum encoding via photon-subtracted squeezed states, Phys. Rev. A 99, 022342 (2019)
  • M. Walschaers, S. Sarkar, V. Parigi, and N. Treps, Tailoring Non-Gaussian Continuous-Variable Graph States, Phys. Rev. Lett. 121, 220501 (2018)
  • J. Nokkala, F. Arzani, F. Galve, R. Zambrini, S. Maniscalco, J.  Piilo, N. Treps, V. Parigi, Reconfigurable optical implementation of quantum complex networks, New J. Phys. 20, 053024 (2018)
  • M. Walschaers, C. Fabre, V. Parigi, N. Treps, Statistical signatures of multimode single-photon added and subtracted states of light, Phys. Rev. A 96, 053835 (2017)
  • M. Walschaers, C. Fabre, V. Parigi, N. Treps, Entanglement and Wigner function negativity of multimode non-Gaussian states, Phys. Rev. Lett. 119, 183601 (2017)
  • V. Parigi, E. Perros, G. Binard, C. Bourdillon, A. Maître, R. Carminati, V. Krachmalnicoff, and Y. De Wilde, Near-field to far-field characterization of speckle patterns generated by disordered nanomaterials, Opt. Express, 24, 7019 (2016)
  • V. Parigi, V. D’Ambrosio, C. Arnold, L. Marrucci, F. Sciarrino and J. Laurat, Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory, Nature Communications 6, 7706 (2015).
  • E. Bimbard, R. Boddeda, N. Vitrant, A. Grankin, V. Parigi, J. Stanojevic, A. Ourjoumtsev, and P. Grangier, Homodyne tomography of a single photon retrieved on demand from a cavity-enhanced cold atom memory, Phys. Rev. Lett. 112, 033601 (2014).
  • J. Stanojevic, V. Parigi, E. Bimbard, A. Ourjoumtsev, and P. Grangier, Dispersive optical non-linearities in a Rydberg electromagnetically- induced- transparency medium, Phys. Rev. A 88, 053845 (2013).
  • V. Parigi, E. Bimbard, J. Stanojevic, A. J. Hilliard, F. Nogrette, R. Tualle-Brouri, A. Ourjoumtsev, and P. Grangier, Observation and Measurement of Interaction-Induced Dispersive Optical Nonlinearities in an Ensemble of Cold Rydberg Atoms, Phys. Rev. Lett. 109, 233602 (2012).
  • J. Stanojevic, V. Parigi, E. Bimbard, A. Ourjoumtsev, P. Pillet, and P. Grangier, Generating non-Gaussian states using collisions between Rydberg polaritons, Phys. Rev. A 86, 021403(R) (2012).
  • J. Stanojevic, V. Parigi, E. Bimbard, R. Tualle-Brouri, A. Ourjoumtsev, and P. Grangier, Controlling the quantum state of a single photon emitted from a single polariton, Phys. Rev. A 84, 053830 (2011).
  • A. Zavatta, V. Parigi, M.S. Kim, H. Jeong, and M. Bellini, Experimental Demonstration of the Bosonic Commutation Relation via Superpositions of Quantum Operations on Thermal Light Fields, Phys. Rev. Lett. 103, 140406, (2009).
  •  V. Parigi, A. Zavatta, and M. Bellini, Implementation of single-photon creation and annihilation operators: experimental issues in their application to thermal states of light, J. Phys. B: At. Mol. Opt. Phys. 42, 114005, (2009).
  • A. Cere, V. Parigi, M. Abad, F. Wolfgramm, A. Predojevic and M. W. Mitchell, Narrowband tunable filter based on velocity-selective optical pumping in an atomic vapor, Opt. Lett. 34, 1012, (2009).
  • M. S. Kim, H. Jeong, A. Zavatta, V. Parigi and M. Bellini, Scheme to prove the bosonic commutation relation using single-photon interference, Phys. Rev. Lett. 101, 260401 (2008).
  •  A. Zavatta, V. Parigi, M. S. Kim and M. Bellini, Subtracting photons from arbitrary light fields:experimental test of coherent state invariance by single photon annihilation, New Journal of Physics 10, 123006 (2008).
  • A. Zavatta, V. Parigi, and M. Bellini, Toward quantum frequency combs: Boosting the generation of highly nonclassical light states by cavity-enhanced parametric downconversion at high repetition rates, Phys. Rev. A 78, 033809 (2008).
  • T. Kiesel, W. Vogel, V. Parigi, A. Zavatta and M. Bellini, Experimental determination of a nonclassical Glauber-Sudarshan P function, Phys. Rev. A 78, 021804(R) (2008).
  •  V. Parigi, A. Zavatta, and M. Bellini, Manipulating thermal light states by the controlled addition and subtraction of single photons, Laser Physics Letters 5, 246-251 (2008).
  •  V. Parigi, A. Zavatta, M.S. Kim and M. Bellini, Probing Quantum Commutation Rules by Addition and Subtraction of Single Photons to/from a Light Field, Science 317, 1890 (2007).
  •  A. Zavatta, V. Parigi and M. Bellini, Experimental nonclassicality of single-photonadded- thermal light states, Phys. Rev. A 75, 052106 (2007).
  • M. D’Angelo, A. Zavatta, V. Parigi and M. Bellini, Remotely prepared single-photon time-encoded ebits: homodyne tomography characterization,Journal of Modern Optics 53 (16-17), 2259-2270 (2006).
  •  A. Zavatta, M. D’Angelo, V. Parigi and M. Bellini, Two-mode homodyne tomography of time-encoded single-photon ebits, Laser Physics 16 (11), 1501- 1507 (2006).
  • M. D’Angelo, A. Zavatta, V. Parigi and M. Bellini, Tomographic test of Bell inequality for a time-delocalized single photon, Phys. Rev. A 74, 052114 (2006).
  •  A. Zavatta, M. D’Angelo, V. Parigi and M. Bellini, Remote preparation of arbitrary time encoded single-photon ebits, Phys. Rev. Lett. 96, 020502 (2006).