We have measured the effect of dipole-dipole interactions on the frequency of a collective mode of a Bose-Einstein condensate.
arXiv:1005.2493 (2010) / Phys. Rev. Lett. 105, 040404 (2010)
We report on a strategy to maximize the number of chromium atoms transferred from a magneto-optical trap into an optical trap through accumulation in metastable states via strong optical pumping.
arXiv:1004.3642 (2010) / Appl. Phys. B 102, 1 (2011)
We study dipolar relaxation in both ultracold thermal and Bose-condensed Cr atom gases. We show three different ways to control dipolar relaxation, making use of either a static magnetic field, an oscillatory magnetic field, or an optical lattice to reduce the dimensionality of the gas from three-dimensional (3D) to two-dimensional (2D).
arXiv:1002.0222 (2010) / Phys. Rev. A 81, 042716 (2010)
We develop a theoretical model to describe the radio-frequency (RF) induced coupling of a pair of colliding atoms to a Feshbach molecule when a magnetic field arbitrarily far from the Feshbach resonance is modulated in time.
arXiv:0812.4355 (2008) / Eur. Phys. J. D 56, (2010)
We analyze a narrow Feshbach resonance with ultracold chromium atoms colliding in 𝑑 wave. The resonance is made possible by dipole-dipole interactions, which couple an incoming 𝑙=2 collision channel with a bound molecular state with 𝑙=0.
arXiv:0811.4282 (2008) / Phys. Rev. A 79, 032706 (2009)
We study the effect of strong radio-frequency (RF) fields on a Bose-Einstein condensate (BEC) of chromium atoms, in a regime where the RF frequency is much larger than the Larmor frequency.
arXiv:0808.3931 (2008) / Phys. Rev. A 78, 051603(R) (200)
We report on the production of 52Cr Bose-Einstein condensates with an all-optical method.
arXiv:0712.3521 (2007) / Phys. Rev. A 77, 061601(R) (2008)
We introduce a time-averaged trap in which the internal state of the atoms is rapidly modulated to modify the magnetic trapping potential.
arXiv:0711.0663 (2007) / Phys. Rev. A 77, 053413 (2008)
We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap.
arXiv:0705.1479 (2007) / Eur. Phys. J. D 45, 189 (2007)
We study the continuous accumulation of cold atoms from a magneto-optical trap (MOT) into a finite depth trap, consisting in a magnetic quadrupole trap dressed by a radiofrequency (RF) field.
arXiv:0612133 (2006) / Phys. Rev. A 76, 023406 (2007)
