CNRS Research Scientist
Head of the Quantum Photonics Team,
Collège de France, Institute of Physics
CIFAR Azrieli Global Scholar

Short CV:

  • 2015: Habilitation thesis, Institut d’Optique, Palaiseau.
  • 2009-2015: CNRS Research Scientist, Institut d’Optique, Palaiseau.
  • 2007-2009: Post-doc, Max Planck Institute for Quantum Optics, Garching.
  • 2004-2007: PhD, Institut d’Optique, Palaiseau.
  • 2001-2004: Student at Ecole Normale Supérieure, Paris

Awards & Fellowships:

ERC Starting Grant (2015), CNRS Scientific Excellency Premium (2010), European Physical Society PhD Thesis Prize (2009), C’Nano PhD Thesis Prize (2008), ParisTech PhD Thesis Prize (2008).


A. I. Lvovsky, Philippe Grangier, Alexei Ourjoumtsev, Valentina Parigi, Masahide Sasaki, Rosa Tualle-BrouriProduction and applications of non-Gaussian quantum states of light
Erwan Bimbard, Rajiv Boddeda, Nicolas Vitrant, Andrey Grankin, Valentina Parigi, Jovica Stanojevic, Alexei Ourjoumtsev, Philippe GrangierHomodyne tomography of a single photon retrieved on demand from a cavity-enhanced cold atom memoryPhys. Rev. Lett. 112, 033601 (2014)
Jovica Stanojevic, Valentina Parigi, Erwan Bimbard, Rosa Tualle-Brouri, Alexei Ourjoumtsev, and Philippe GrangierControlling the quantum state of a single photon emitted from a single polaritonPhys. Rev. A 84, 053830 (2011)
Rosa Tualle-Brouri, Alexei Ourjoumtsev, Aurelien Dantan, Philippe Grangier, Martijn Wubs, and Anders S. SørensenMultimode model for projective photon-counting measurementsPhys. Rev. A 80, 013806 (2009)
Alexei Ourjoumtsev, Franck Ferreyrol, Rosa Tualle-Brouri, Philippe Grangier Preparation of non-local superpositions of quasi-classical light statesNature Physics 5, 189-192 (2009)
Alexei Ourjoumtsev, Aurélien Dantan, Rosa Tualle-Brouri, and Philippe GrangierIncreasing entanglement between Gaussian states by coherent photon subtractionPhys. Rev. Lett. 98, 030502 (2007)
Alexei Ourjoumtsev, Hyunseok Jeong, Rosa Tualle-Brouri, Philippe Grangier Generation of optical ‘Schrödinger cats’ from photon number statesNature 448, 784-786 (2007)
Alexei Ourjoumtsev, Rosa Tualle-Brouri, Philippe GrangierQuantum homodyne tomography of a two-photon Fock statePhys. Rev. Lett. 96, 213601 (2006)
Alexei Ourjoumtsev, Rosa Tualle-Brouri, Julien Laurat, Philippe GrangierGenerating Optical Schrödinger Kittens for Quantum Information ProcessingScience 312, 83-86 (2006)
Jerome Wenger, Alexei Ourjoumtsev, Rosa Tualle-Brouri, Philippe GrangierTime-resolved homodyne characterization of individual quadrature-entangled pulsesEur. Phys. J. D 32, 391-396 (2005)
Valentin Magro, Julien Vaneecloo, Sébastien Garcia, Alexei OurjoumtsevDeterministic freely propagating photonic qubits with negative Wigner functions Nature Photonics 17, 688–693 (2023)
Julien Vaneecloo, Sébastien Garcia, Alexei OurjoumtsevAn Intracavity Rydberg Superatom for Optical Quantum Engineering: Coherent Control, Single-Shot Detection and Optical π Phase ShiftPhys. Rev. X 12, 021034 (2022)
Rajiv Boddeda, Imam Usmani, Erwan Bimbard, Andrey Grankin, Alexei Ourjoumtsev, Etienne Brion, Philippe GrangierRydberg-induced optical nonlinearities from a cold atomic ensemble trapped inside a cavityJ. Phys. B: At. Mol. Opt. Phys. 49, 084005 (2016)
Sumanta Das, Andrey Grankin, Ivan Iakoupov, Etienne Brion, Johannes Borregaard, Rajiv Boddeda, Imam Usmani, Alexei Ourjoumtsev, Philippe Grangier, and Anders S. Sørensen Photonic controlled-phase gates through Rydberg blockade in optical cavitiesPhys. Rev. A 93, 040303(R) (2016)
A. Grankin, E. Brion, R. Boddeda, S. Ćuk, I. Usmani, A. Ourjoumtsev, P. GrangierInelastic photon scattering via the intracavity Rydberg blockadePhys. Rev. Lett 117, 253602 (2016)
A. Grankin, E. Brion, E. Bimbard, R. Boddeda, I. Usmani, A. Ourjoumtsev, and P. GrangierQuantum-optical nonlinearities induced by Rydberg-Rydberg interactions: A perturbative approachPhys. Rev. A 92, 043841 (2015)
A. Grankin, E. Brion, E. Bimbard, R. Boddeda, I. Usmani, A. Ourjoumtsev, P. GrangierQuantum statistics of light transmitted through an intracavity Rydberg mediumNew J. Phys. 16, 043020 (2014)
Jovica Stanojevic, Valentina Parigi, Erwan Bimbard, Alexei Ourjoumtsev, Philippe GrangierDispersive optical nonlinearities in a Rydberg electromagnetically-induced-transparency mediumPhys. Rev. A 88, 053845 (2013)
Jovica Stanojevic, Valentina Parigi, Erwan Bimbard, Alexei Ourjoumtsev, Pierre Pillet, and Philippe GrangierGenerating non-Gaussian states using collisions between Rydberg polaritonsPhys. Rev. A 86, 021403(R) (2012)
Valentina Parigi, Erwan Bimbard, Jovica Stanojevic, Andrew J. Hilliard, Florence Nogrette, Rosa Tualle-Brouri, Alexei Ourjoumtsev, Philippe GrangierObservation and Measurement of Interaction-Induced Dispersive Optical Nonlinearities in an Ensemble of Cold Rydberg AtomsPhys. Rev. Lett. 109, 233602 (2012)
Alexei Ourjoumtsev, Alexander Kubanek, Markus Koch, Christian Sames, Pepijn W. H. Pinkse, Gerhard Rempe, Karim MurrObservation of squeezed light from one atom excited with two photonsNature 474, 623-626 (2011)
A. Kubanek, A. Ourjoumtsev, I. Schuster, M. Koch, P. W. H. Pinkse, K. Murr, G. RempeTwo-Photon Gateway in One-Atom Cavity Quantum ElectrodynamicsPhys. Rev. Lett. 101, 203602 (2008)
Nicolas Vitrant, Sébastien Garcia, Kilian Müller, Alexei OurjoumtsevHigh-resolution imaging of cold atoms through a multimode fiberPhys. Rev. Appl. 15, 064047 (2021)
Nicolas Vitrant, Kilian Müller, Sébastien Garcia, Alexei OurjoumtsevManipulating cold atoms through a high-resolution compact system based on a multimode fiberOpt. Lett. 45, 1519-1522 (2020)
A. Kubanek, M. Koch, C. Sames, A. Ourjoumtsev, T. Wilk, P. W. H. Pinkse and G. Rempe Feedback control of a single atom in an optical cavityAppl. Phys. B 102, 433-442 (2011)
Markus Koch, Christian Sames, Alexander Kubanek, Matthias Apel, Maximilian Balbach, Alexei Ourjoumtsev, Pepijn W. H. Pinkse, and Gerhard RempeFeedback Cooling of a Single Neutral AtomPhys. Rev. Lett. 105, 173003 (2010)
A. Kubanek, M. Koch, C. Sames, A. Ourjoumtsev, P. W. H. Pinkse, K. Murr, G. RempePhoton-by-photon feedback control of a single-atom trajectoryNature 462, 898-901 (2009)
Aurélien Dantan, Julien Laurat, Alexei Ourjoumtsev, Rosa Tualle-Brouri, and Philippe GrangierFemtosecond Ti:sapphire cryogenic amplifier with high gain and MHz repetition rateOptics Express 15, 8864-8870 (2007)
A. Ourjoumtsev, M.-C. Dheur, T. Avignon and L. JacubowiezTwo-photon quantum interference for anundergraduate labEur. J. Phys. 36, 065034 (2015)
Alexei OurjoumtsevRepairing quadrature entanglementNature Photonics 4, 136-137 (2010)
Alexei OurjoumtsevVers le quantique macroscopiqueDossier Pour la Science 68, 80-86 (2010)
Alexei OurjoumtsevDon't look nowNature 456, 880-881 (2008).


Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France. .