ANR project: Cold atoms, photons, and quantum correlations (QuaCor)
Cold atoms coupled to photons are a promising platform for quantum information, computation and communication. In this project, the goal is to focus on two specific tools: sources of correlated photons and memories, exploiting collective, multimode quantum states of atomic ensembles. The main scientific objectives are:- Explore a new kind of correlated photon source based on a multi-atom ensemble: Our goal is to explore a new kind of source of photons, based on the correlations inside the Mollow triplet, and using a many-atom system such as a cold atomic cloud.
- Long-lived quantum memories with atomic ensembles: Our goal is to exploit collective subradiant states of atomic ensembles as novel memories.
News & events
Oct. 2021: The QuaCor webpage is back!
After several months of interruption and the complete loss of data (due to the fire of the data center), the QuaCor webpage is finally back. But this is still a work in progress...
Sept. 2021: CoScaLi workshop at Porquerolles
Mathilde, Robin, and Romain have organized the 2021 workshop on Collective Scattering of Light (CoScaLi) on the beautiful island of Porquerolles. This hybrid event (both on-line and in-person) has been a success!
Consortium
- Institut de Physique de Nice, team "cold atoms" (UCA, CNRS)
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- Mathilde Hugbart (PI of the ANR project)
- William Guerin
- Robin Kaiser
- Hodei Eneriz (Post-doc)
- Pierre Lassègues (PhD student)
- Martial Morisse (PhD student)
- Stephan Asselie (PhD student)
- Universidade Federal de São Carlos (UFSCar), São Carlos (Brazil)
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- Romain Bachelard (co-PI of the ANR project)
- Raul Celistrino Teixeira
- Andre Cidrim (Post-doc)
- Mateus Biscassi (PhD student)
- Pablo Gabriel Santos Dias (PhD student)
- Pedro Henrique Nantes Magnani (PhD student)
- Instituto de Física de São Carlos (IFSC), Universidade de São Paulo (USP), São Calos (Brazil)
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- Philippe Courteille
- Marcia Frometa Fernandez (PhD student)
Publications
- Mirror-assisted backscattering interferometry to measure the first-order correlation function of the light emitted by quantum scatterers
P. G. S. Dias, M. F. Fernandez, P. H. N. Magnani, K. R. B. Theophilo, M. Hugbart, P. W. Courteille, R. Celistrino Teixeira
Phys. Rev. A 104, 053716 (2021), preprint: arXiv:2108.01437
- Subradiance in dilute atomic ensembles: Role of pairs and multiple scattering
Y. A. Fofanov, I. M. Sokolov, R. Kaiser, W. Guerin
Phys. Rev. A 104, 023705 (2021), preprint: arXiv:2012.10659
- Photon-photon correlations from a pair of strongly coupled two-level emitters
E. Darsheshdar, M. Hugbart, R. Bachelard, C. J. Villas-Boas
Phys. Rev. A 103, 053702 (2021), preprint: arXiv:2012.03735
- van der Waals dephasing for Dicke subradiance in cold atomic clouds
A. Cipris, R. Bachelard, R. Kaiser, W. Guerin
Phys. Rev. A 103, 033714 (2021), preprint: arXiv:2012.06248
- Subradiance with saturated atoms: population enhancement of the long-lived states
A. Cipris, N. A. Moreira, T. S. do Espirito Santo, P. Weiss, C. J. Villas-Boas, R. Kaiser, W. Guerin, R. Bachelard
Phys. Rev. Lett. 126, 103604 (2021), preprint: arXiv:2009.05172
- Superradiance as single scattering embedded in an effective medium
P. Weiss, A. Cipris, R. Kaiser, I. M. Sokolov, W. Guerin
Phys. Rev. A 103, 023702 (2021), preprint: arXiv:2011.05201
- Connecting field and intensity correlations: The Siegert relation and how to test it
D. Ferreira, R. Bachelard, W. Guerin, R. Kaiser, M. Fouché
Am. J. Phys. 88, 831 (2020), preprint: arXiv:2002.05425
- Photon blockade with ground-state neutral atoms
A. Cidrim, T. S. do Espirito Santo, J. Schachenmayer, R. Kaiser, R. Bachelard
Phys. Rev. Lett. 125, 073601 (2020), preprint: arXiv:2004.14720