Project

Back to overview

Light-Matter interaction with entangled photons

English title Light-Matter interaction with entangled photons
Applicant Stefanov André
Number 159259
Funding scheme SNSF Professorships
Research institution Institut für angewandte Physik Universität Bern
Institution of higher education University of Berne - BE
Main discipline Other disciplines of Physics
Start/End 01.01.2016 - 31.12.2017
Approved amount 587'039.00
Show all

Keywords (4)

Quantum optics; Coherent Control; Light-Matter interaction; Entanglement

Lay Summary (French)

Lead
L’interaction entre la lumière et la matière est un des processus physique les plus importants pour sonder la propriété de la matière. On peut citer par exemple tout le domaine de la spectroscopie, ainsi que l’imagerie. De manière schématique la lumière interagis avec le système à étudier et la réponse du système est observée. Normalement la lumière utilisée est issue d’une source de lumière classique (par exemple la lumière émise par un laser) de sorte que ses propriétés sont décrites par la physique classique. Cependant des états quantiques de la lumière peuvent être générés qui ne peuvent être décris classiquement. Parmi ces états, les états intriqués à deux photons montrent des caractéristiques particulières. Les corrélations en énergie entre les deux photons d’une paire sont de nature purement quantique et par conséquent leur interaction avec la matière peut mettre en évidence de nouveaux effets quantiques.
Lay summary

Contenu et objectifs du travail de recherche

 L’objectif de ce projet est d’utiliser ces corrélations en énergie pour réaliser expérimentalement des protocoles basée sur des effets quantiques. Pour cela nous développons des nouvelles sources de photon intriqués et de nouvelles méthodes pour manipuler le spectre de ces photons. Les méthodes expérimentales ainsi développées sont appliquées d’une côté pour étudier l’interaction entre la lumière et la matière à travers de nouvelle méthodes de spectroscopie, et de l’autre pour implémenter des protocoles de traitement de l’information quantique.

Contexte scientifique et social du projet de recherche

Les résultats permettront de démontrer pour la première fois la capacité de le lumière quantique à réaliser des mesures spectroscopiques, et ainsi complémenter de manière efficace les méthode classiques.

Direct link to Lay Summary Last update: 04.01.2016

Responsible applicant and co-applicants

Employees

Publications

Publication
Entanglement, uncertainty and dispersion: a simple experimental demonstration of non-classical correlations
Lerch Stefan, Guerreiro Thiago, Sanguinetti Bruno, Sekatski Pavel, Gisin Nicolas, Stefanov André (2017), Entanglement, uncertainty and dispersion: a simple experimental demonstration of non-classical correlations, in Journal of Physics B: Atomic, Molecular and Optical Physics, 50(5), 055505.
High precision dispersion measurement with a multi-loop Mach-Zehnder interferometer
Kohn Jos, Ryser Manuel, Scheffold Frank, Stefanov André (2017), High precision dispersion measurement with a multi-loop Mach-Zehnder interferometer, in Optical Fiber Technology, 36, 203-209.
On the role of entanglement in two-photon metrology
Stefanov André (2017), On the role of entanglement in two-photon metrology, in Quantum Science and Technology, 2, 025004.
SUPERTWIN: towards 100kpixel CMOS quantum image sensors for quantum optics applications
Gasparini Leonardo, Bessire Bänz, Unternährer Manuel, Stefanov André, Boiko Dmitri, Perenzoni Matteo (2017), SUPERTWIN: towards 100kpixel CMOS quantum image sensors for quantum optics applications, in Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV.
Bipartite Bell inequalities with three ternary-outcome measurements—from theory to experiments
Schwarz Sacha, Bessire Bänz, Stefanov André, Liang Yeong-Cherng (2016), Bipartite Bell inequalities with three ternary-outcome measurements—from theory to experiments, in New Journal of Physics, 18(3), 035001-035001.
Broadband energy-entangled photon for high resolution temporal sensing
Bernhard Christof, Bessire Bänz, Feurer Thomas, Stefanov André (2016), Broadband energy-entangled photon for high resolution temporal sensing, in SPIE BiOS, San Francisco, California, United States.
Coincidence detection of spatially correlated photon pairs with a monolithic time-resolving detector array
Unternährer Manuel, Bessire Bänz, Gasparini Leonardo, Stoppa David, Stefanov André (2016), Coincidence detection of spatially correlated photon pairs with a monolithic time-resolving detector array, in Optics Express, 24(25), 28829-28829.
Optimal measurements for nonlocal correlations
Schwarz Sacha, Stefanov André, Wolf Stefan, Montina Alberto (2016), Optimal measurements for nonlocal correlations, in Physical Review A, 94(2), 022322-1-022322-13.
Ultrashort pulses characterization by quantum state tomography
Lerch Stefan, Stefanov André (2016), Ultrashort pulses characterization by quantum state tomography, in Optics Express, 24(26), 30088-30088.

Collaboration

Group / person Country
Types of collaboration
Dr Gabriele Bulgarini, Single Quantum Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
NCCR MUST Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
NCCR QSIT Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel
Prof. Dmitri Mogilevtsev, IPNSAB, Minsk Belarus (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Nicolas Gisin, Université de Genève Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Dror Fixler, Bar-Ilan University Israel (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel
Dr David Stoppa, Fondazione Bruno Kessler FBK Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Dr Dmitri Boiko, CSEM, Neuchâtel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Stefan Wolf, USI, Lugano Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Frank Scheffold, University of Fribourg Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Dr. Jaques Morel, METAS Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Liang, ETHZ Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
QSIT General Meeting 2018 Poster Quantum State Tomography with Regularized Finite Statistics 07.02.2018 Arosa, Switzerland Schwarz Sacha; Stefanov André;
XV International Conference on Quantum Optics and Quantum Information Talk given at a conference Coincidence Detection of Spatially Correlated Photon Pairs with a Novel Type of Monolithic Time-Resolving Detector Array 20.11.2017 Minsk, Belarus Stefanov André;
Physics Seminar Individual talk Broadband Energy-Entangled Photons for Quantum Metrology 17.11.2017 Jena, Germany Stefanov André;
2nd Quantum Technology - Implementations for Space Poster Energy-Entangled photon pairs for probing general relativity with quantum states 14.11.2017 ESA/ESTEC, Noorwijk, Netherlands Stefanov André;
SQUAD 2017: ADVANCED SCHOOL ON QUANTUM DETECTORS Talk given at a conference Detectors in Quantum Physics 16.10.2017 Trento, Italy Stefanov André;
CLEO-Europe / EQEC 2017 Talk given at a conference Nonlocal Correlations in Frequency Entangled Two-Qudit Systems 25.06.2017 Münich, Germany Schwarz Sacha;
CLEO / EQEC 2017 Talk given at a conference Ultrashort pulses characterization by quantum state tomography 25.06.2017 Münich, Germany Stefanov André;
CLEO / EQEC 2017 Talk given at a conference Coincidence Detection of Spatially Correlated Photon Pairs with a Novel Type of Monolithic Time-Resolving Detector Array 25.06.2017 Münich, Germany Unternährer Manuel;
Physics Seminar Individual talk Broadband Energy-Entangled Photons for Quantum Metrology 29.05.2017 Würzburg, Germany Stefanov André;
Quantum 2017 Talk given at a conference Coincidence Detection of Spatially Correlated Photon Pairs with a Novel Type of Monolithic Time-Resolving Detector Array 07.05.2017 Torino, Italy Unternährer Manuel;
Quantum Information and Measurement Talk given at a conference Coincidence detection of spatially correlated photon pairs with a novel type of monolithic time-resolving detector array 05.04.2017 Paris, France Stefanov André; Unternährer Manuel;
COST Action Quantum Technologies in Space Conference & WG meeting Talk given at a conference Broadband energy entangled photons and their potential for space applications 26.03.2017 Valletta, Malta Stefanov André;
QSIT General Meeting 2017 Poster Coincidence detection of spatially correlated photon pairs with a monolithic time-resolving detector array 01.02.2017 Arosa, Switzerland Unternährer Manuel; Stefanov André;
QSIT General Meeting 2017 Poster Nonlocal Correlations of Entangled Two-Qudit States Using Energy-Time Entangled Photons 01.02.2017 Arosa, Switzerland Schwarz Sacha; Stefanov André;
YQIS 2016 Talk given at a conference Coincidence detection of spatially correlated photon pairs with a new type of monolithic time-resolving detector array 18.10.2016 Barcelona, Spain Unternährer Manuel;
IQC Seminar Talk Individual talk Nonlocal correlations between Frequency Entangled Photons 20.09.2016 IQC, University of Waterloo, Canada Schwarz Sacha;
6th International Conference on Quantum Cryptography Poster Nonlocal Correlations of Entangled Two-Qudit States Using Energy-Time Entangled Photons 12.09.2016 Washington DC, United States of America Schwarz Sacha; Stefanov André;
SPS Annual Meeting 2016 Talk given at a conference Bell inequalities with three ternary-outcome measurements - from theory to experiments 24.08.2016 Lugano, Switzerland Schwarz Sacha; Stefanov André;
FQXI Workshop Talk given at a conference Optimal measurements for nonlocal correlations with energy-time entangled photons 02.06.2016 Ecole Centrale de Marseille, France Stefanov André;
Joint WG2-WG3 workshop of COST action 1403 Talk given at a conference Broadband energy-entangled photons for high resolution temporal sensing and spectroscopy 30.05.2016 Aix-Marseille Université, France Stefanov André;
Optics Seminar Individual talk Broadband energy-entangled photon for high resolution temporal sensing and for quantum information 13.04.2016 Bar Ilan University, Tel Aviv, Israel Stefanov André;
Spectral & Spatial Engineering of Quantum Light Workshop Talk given at a conference Exploring entangled states of higher dimensions by spectral manipulation of energy-entangled photons 30.03.2016 Varsovie, Poland Stefanov André;
SPIE Photonic West BIOS Talk given at a conference Broadband energy-entangled photon for high resolution temporal sensing 13.02.2016 San Francisco, United States of America Stefanov André;
QSIT General Meeting 2016 Talk given at a conference Optimal measurements for nonlocal correlations 05.02.2016 Arosa, Switzerland Schwarz Sacha; Stefanov André;
NCCR QSIT General Meeting 2016 Poster Self-calibrating optical low coherence reflectometry with energy-time entangled photons 03.02.2016 Arosa, Switzerland Stefanov André; Unternährer Manuel;
NCCR MUST annual Meeting 2016 Poster Quantum tomography inspired pulse reconstruction 11.01.2016 Engelberg, Switzerland Lerch Stefan; Stefanov André;


Associated projects

Number Title Start Funding scheme
133596 Light-Matter interaction with entangled photons 01.01.2012 SNSF Professorships

Abstract

This project aims at studying the interaction between non-classical light and matter in a novel way, by shaping the wave-function of entangled photons. Broadband entangled photons offers the unique capability of combining narrow energy spectrum, from the pump, and strong temporal correlations, between the photons. Those features are at the heart of entangled photon spectroscopy, promising a better resolution of complex molecular spectrum.The goal is to experimentally implement such spectroscopy. In addition energy entangled photons offer novel features to encode high dimensional entangled quantum states and as such to test various Bell inequalities.
-