TY - JOUR
T1 - Strong local-field effect on the dynamics of a dilute atomic gas irradiated by two counterpropagating optical fields
T2 - Beyond standard optical lattices
AU - Zhu, Jiang
AU - Dong, Guangjiong
AU - Shneider, Mikhail N.
AU - Zhang, Weiping
PY - 2011/5/25
Y1 - 2011/5/25
N2 - We study a recent experiment [K. Li etal., Phys. Rev. Lett. 101, 250401 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.250401] on diffracting a Bose-Einstein condensate by two counterpropagating optical fields. Including the local-field effect, we explain the asymmetric momentum distribution and self-imaging of the Bose-Einstein condensate self-consistently. Moreover, we find that the two counterpropagating optical fields could not produce a perfect optical lattice, which is actually deformed by the local-field effect. Our work implies that the local-field effect could be essential for getting a better quantitative analysis of other optical lattice experiments. In particular, the intensity imbalance of the two optical fields could act as a new means to tailor both cold atom dynamics and light propagation.
AB - We study a recent experiment [K. Li etal., Phys. Rev. Lett. 101, 250401 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.250401] on diffracting a Bose-Einstein condensate by two counterpropagating optical fields. Including the local-field effect, we explain the asymmetric momentum distribution and self-imaging of the Bose-Einstein condensate self-consistently. Moreover, we find that the two counterpropagating optical fields could not produce a perfect optical lattice, which is actually deformed by the local-field effect. Our work implies that the local-field effect could be essential for getting a better quantitative analysis of other optical lattice experiments. In particular, the intensity imbalance of the two optical fields could act as a new means to tailor both cold atom dynamics and light propagation.
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U2 - 10.1103/PhysRevLett.106.210403
DO - 10.1103/PhysRevLett.106.210403
M3 - Article
C2 - 21699277
AN - SCOPUS:79960621924
SN - 0031-9007
VL - 106
JO - Physical review letters
JF - Physical review letters
IS - 21
M1 - 210403
ER -