Thermal counting statistics in an atomic two-mode squeezed vacuum state

Autor: Maxime Perrier, Ziyad Amodjee, Pierre Dussarrat, Alexandre Dareau, Alain Aspect, Marc Cheneau, Denis Boiron, Christoph I. Westbrook

Publikováno v: SciPost Physics, Vol 7, Iss 1, p 002 (2019)

We measure the population distribution in one of the atomic twin beams generated by four-wave mixing in an optical lattice. Although the produced two-mode squeezed vacuum state is pure, each individual mode is described as a statistical mixture.

Externí odkaz: https://doaj.org/article/8c9bbb4ca0604e44bb7e342c48b52a53

Pair correlation of atoms scattered from colliding Bose-Einstein quasicondensates

Autor: Denis Boiron, Paweł Ziń, Tomasz Wasak, Christoph I Westbrook

Publikováno v: Physical Review A
Physical Review A, American Physical Society 2020, 101 (3), pp.033616. ⟨10.1103/PhysRevA.101.033616⟩

A collision of Bose-Einstein condensates is a useful source of single nonclassically correlated pairs of atoms. Here, we consider elastic scattering of atoms from elongated clouds taking into account an effective, finite duration of the collision due

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a1fd4a1b920d07041bd9d403a302e9c
https://doi.org/10.1103/physreva.101.033616

Experimental study of the role of trap symmetry in an atom-chip interferometer above the Bose-Einstein condensation threshold

Autor: Sylvain Schwartz, Christoph I Westbrook, Matthieu Dupont-Nivet, Romain Demur

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2018, 20, pp.043051. ⟨10.1088/1367-2630/aabc72⟩

We report the experimental study of an atom-chip interferometer using ultracold rubidium 87 atoms above the Bose-Einstein condensation threshold. The observed dependence of the contrast decay time with temperature and with the degree of symmetry of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90397d12e78e836502259328cca0cd6e

Contrast and phase-shift of a trapped atom interferometer using a thermal ensemble with internal state labelling

Autor: S. Schwartz, Matthieu Dupont-Nivet, Christoph I Westbrook

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2016, 18 (11), ⟨10.1088/1367-2630/18/11/113012⟩

We report a theoretical study of a double-well Ramsey interferometer using internal state labelling. We consider the use of a thermal ensemble of cold atoms rather than a Bose-Einstein condensate to minimize the effects of atomic interactions. To mai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29b9823f7cced7baef66c9e82ec61bcf

Comparison of the Hanbury Brown-Twiss effect for bosons and fermions

Autor: Alain Aspect, Christoph I Westbrook, Wim Hogervorst, Hong Chang, Valentina Krachmalnicoff, J. M. McNamara, Aurélien Perrin, M. Schellekens, Wim Vassen, Denis Boiron, T. Jeltes

Publikováno v: Nature, 445(7126), 402-405. Nature Publishing Group
Jeltes, T, McNamara, J M, Hogervorst, W, Vassen, W, Krachmalnicoff, V, Schellekens, M, Perrin, A, Chang, H, Boiron, D, Aspect, A & Westbrook, C I 2007, ' Comparison of the Hanbury Brown-Twiss effect for bosons and fermions ', Nature, vol. 445, no. 7126, pp. 402-405 . https://doi.org/10.1038/nature05513
Nature
Nature, Nature Publishing Group, 2007, 445, pp.402. ⟨10.1038/nature05513⟩

Fifty years ago, Hanbury Brown and Twiss (HBT) discovered photon bunching in light emitted by a chaotic source, highlighting the importance of two-photon correlations and stimulating the development of modern quantum optics . The quantum interpretati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31fc664e6a2e215a679e709b6afef7b0
https://hdl.handle.net/1871.1/3671f2c6-ffc8-49ca-a305-9e655f93dfde