Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Boiron, D."'
Autor:
Perrier, M., Amodjee, Z., Dussarrat, P., Dareau, A., Aspect, A., Cheneau, M., Boiron, D., Westbrook, C. I.
Publikováno v:
SciPost Phys. 7, 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. We c
Externí odkaz:
http://arxiv.org/abs/1904.04135
Publikováno v:
Phys. Rev. Lett. 115, 025301 (2015)
We consider a sonic analog of a black hole realized in the one-dimensional flow of a Bose-Einstein condensate. Our theoretical analysis demonstrates that one- and two-body momentum distributions accessible by present-day experimental techniques provi
Externí odkaz:
http://arxiv.org/abs/1406.5229
Autor:
Kheruntsyan, K. V., Jaskula, J. -C., Deuar, P., Bonneau, M., Partridge, G. B., Ruaudel, J., Lopes, R., Boiron, D., Westbrook, C. I.
Publikováno v:
Phys. Rev. Lett. 108, 260401 (2012)
The Cauchy-Schwarz (CS) inequality -- one of the most widely used and important inequalities in mathematics -- can be formulated as an upper bound to the strength of correlations between classically fluctuating quantities. Quantum mechanical correlat
Externí odkaz:
http://arxiv.org/abs/1204.0058
Autor:
Moron, F., Hoendervanger, A. L., Bonneau, M., Bouton, Q., Aspect, A., Boiron, D., Clément, D., Westbrook, C. I.
Publikováno v:
Rev. Scient. Instrum. 83, 044705 (2012)
We present an rf gas discharge apparatus which provides an atomic frequency reference for laser manipulation of metastable helium. We discuss the biasing and operation of a Colpitts oscillator in which the discharge coil is part of the oscillator cir
Externí odkaz:
http://arxiv.org/abs/1202.3968
Publikováno v:
Physical Review A 81 053631 (2010)
We report the realization of a BEC of metastable helium-4 atoms (4He*) in an all optical potential. Up to 10^5 spin polarized 4He* atoms are condensed in an optical dipole trap formed from a single, focused, vertically propagating far off-resonance l
Externí odkaz:
http://arxiv.org/abs/1003.4641
Autor:
Chwedenczuk, J., Zin, P., Trippenbach, M., Perrin, A., Leung, V., Boiron, D., Westbrook, C. I.
Publikováno v:
Phys. Rev. A 78, 053605 (2008)
We apply an analytical model for anisotropic, colliding Bose-Einstein condensates in a spontaneous four wave mixing geometry to evaluate the second order correlation function of the field of scattered atoms. Our approach uses quantized scattering mod
Externí odkaz:
http://arxiv.org/abs/0807.3435
Autor:
Perrin, Aurélien, Savage, Craig M., Boiron, D., Krachmalnicoff, V., Westbrook, C. I., Kheruntsyan, Karen
Publikováno v:
New Journal of Physics 10 (2008) 045021
We perform a theoretical analysis of atomic four-wave mixing via a collision of two Bose-Einstein condensates of metastable helium atoms, and compare the results to a recent experiment. We calculate atom-atom pair correlations within the scattering h
Externí odkaz:
http://arxiv.org/abs/0712.2145
Autor:
Molmer, Klaus, Perrin, A., Krachmalnicoff, V., Leung, V., Boiron, D., Aspect, A., Westbrook, C. I.
Publikováno v:
Phys. Rev. A 77, 033601 (2008)
Low energy elastic scattering between clouds of Bose condensed atoms leads to the well known s-wave halo with atoms emerging in all directions from the collision zone. In this paper we discuss the emergence of Hanbury Brown and Twiss coincidences bet
Externí odkaz:
http://arxiv.org/abs/0710.0208
Observation of atom pairs in spontaneous four wave mixing of two colliding Bose-Einstein Condensates
Autor:
Perrin, A., Chang, H., Krachmalnicoff, V., Schellekens, M., Boiron, D., Aspect, A., Westbrook, C. I.
Publikováno v:
Physical Review Letters 99, 15 (2007) 150405
We study atom scattering from two colliding Bose-Einstein condensates using a position sensitive, time resolved, single atom detector. In analogy to quantum optics, the process can also be thought of as spontaneous, degenerate four wave mixing of de
Externí odkaz:
http://arxiv.org/abs/0704.3047
Autor:
Schellekens, M., Hoppeler, R., Perrin, A., Gomes, J. Viana, Boiron, D., Aspect, A., Westbrook, C. I.
Publikováno v:
published in Science 310, 648 (2005)
We have studied 2-body correlations of atoms in an expanding cloud above and below the Bose-Einstein condensation threshold. The observed correlation function for a thermal cloud shows a bunching behavior, while the correlation is flat for a coherent
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508466