November 2015: BRISQ2 Project successfully completed

The project BRISQ2 was completed on November 30, 2015 as scheduled. We would like to thank all those involved in this project for their valuable contributions and personal endeavour.

October 24, 2015: BRISQ2 presented an experiment at the 'Lange Nacht der Wissenschaften 2015' in Erlangen (Germany)

The project BRISQ2 showed a fascinating experiment at 'Long Night of Science' at the Max Planck Institute for the Science of Light. Interested audience could see how one photon became two photons generating a wonderful photon-rainbow. Poster

October 19-20, 2015: The Final Consortium Meeting will be held at the Max Planck Institute for the science of light (MPL) in Erlangen, Germany

The end of the project is November 2015. For this reason the whole consortium of BRISQ2 met again at the Max Planck Institute for the Science of Light in Erlangen, Germany. The partners discussed last results, steps, and spent time together...

August 24, 2015: BRISQ2 partners represent their results at LPHYS'15 (24th Annual International Laser Physics Workshop)

During the LPHYS'15 conference a special session (Seminar 7.10) dedicated to the BRISQ2 project was performed and several talks were given considering different topics of the project.

Seminar 7.10 (BRISQ2 session), Chair: Marco Genovese (INRIM) (Abstracts)

  • I Ruo-Berchera (INRIM) Spatial Multi-Mode Structure of Squeezed Vacuum as a Resource for Quantum Imaging and Quantum Radiometry
  • S S Straupe, (MSU) High-Dimensional Spatial Entanglement with Hermite-Gaussian Modes
  • PR Sharapova, (MSU) The Anisotropy Effects in Bright Squeezed Vacuum States of Light in Terms of Schmidt Modes
  • MV Chekhova (MPG) O-Entanglement
  • AM Perez (MPG) Giant Narrowband Twin-Beam Generation Along the Pump Energy Propagation
  • MV Fedorov (MSU) Separation of Porlarization-Angular Schmidt Modes of the Noncollinear Biphoton States

July 2015: Article published in Nature Communication (Open Access)

Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. Scientists have shown that the generation of both twin beams can be enhanced by more than two orders of magnitude.


June 29 - July 03, 2015: ICSSUR, 14th International Conference on Squeezed States and Uncertainty Relationsand, Gdansk/Sopot, Poland

During the ICSSUR 2015 conference a special session (session C) dedicated to the BRISQ2 project was performed and several talks were given considering different topics of the project.

Talks (book of abstracts):

  • R Filip (invited speaker), Measurement-induced quantum nonlinear operations for traveling beams
  • M Chekhova (invited speaker), Few-mode Bright Squeezed Vacuum
  • M Genovese (invited speaker), Sequential weak measurements: toward simultaneously measuring incompatible observables
  • S Straupe (invited speaker), E Kovlakov, I Bobrov and S Kulik, High-dimensional spatial entanglement with Hermite-Gaussian modes
  • P Sharapova, O Tikhonova, A Perez, M Chekhova and G Leuchs, The anisotropy effect and spatial walk-off in the bright squeezed vacuum states of light in terms of Schmidt modes
  • V Usenko, T Iskhakov, R Filip, M Chekhova and G Leuchs, Conditional preparation of low-noise bright twin beams
  • L Ruppert, V Usenko and R Filip, Homodyne measurement using bright squeezed vacuum
  • O Tikhonova, P Sharapova, M Chekhova and A Perez, Spatial Properties of Bright Squeezed-Vacuum States of Light

June 8-11, 2015: Invited talk at the Linnaeus University, during the conference 'Quantum Theory: from foundations to technologies', (QTFT)

Marco Genovese (INRIM) was invited to give a talk about Measuring incompatible observables at the same time Abstract

June 1-3, 2015: BRISQ2 at the Workshop on Macroscopic Quantum Coherence, University of St Andrews, UK

Quantum coherence of macroscopic systems is a subject currently under intense study, particularly within quantum optics. This workshop is intended to bring together experts on quantum coherence of macroscopic systems, in particular on continuous variable quantum optics and opto-mechanics, in an informal setting for networking and discussion of new ideas on fundamental issues as well as applications in quantum technologies

A poster about phase sensitivity properties of a nonlinear interferometer was presented: M Manceau, AM Pérez, E Knyazev , FY Khalili, G Leuchs, MV Chekhova. Phase super-sensitivity in a nonlinear interferometer. Poster

March 24, 2015: Spring Meeting of the DPG 2015 in Heidelberg, Germany

Kirill Spasibko from the MPG presented his latest results during the annual Spring Meeting of the DPG (Deutsche Physikalische Gesellschaft)

  • Giant Twin-Beam Generation along the Pump Energy Propagation Abstract

BRISQ2 now at facebook!

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