Simultaneous magneto-optical trapping of two lithium isotopes

Mewes, M.-O.; Ferrari, G.; Schreck, Florian; Sinatra, Alice; Salomon, Christophe

doi:10.1103/physreva.61.011403

Cited by 83 publications

(77 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a legitimate approximation for a degenerate Fermi gas in which s-wave scattering is forbidden and only weak p-wave scattering is present [5,21,22,23]. On the other hand, if the atoms in the hyperfine ground states 1 and 2 form a BEC, collisions will be present between these atoms.…”

Section: B Initial Equations Of Motionmentioning

confidence: 99%

Effective magnetic fields in degenerate atomic gases induced by light beams with orbital angular momenta

et al. 2005

View full text Add to dashboard Cite

We investigate the influence of two resonant laser beams on the mechanical properties of degenerate atomic gases. The control and probe beams of light are considered to have Orbital Angular Momenta (OAM) and act on the three-level atoms in the Electromagnetically Induced Transparency (EIT) configuration. The theory is based on the explicit analysis of the quantum dynamics of cold atoms coupled with two laser beams. Using the adiabatic approximation, we obtain an effective equation of motion for the atoms driven to the dark state. The equation contains a vector potential type interaction as well as an effective trapping potential. The effective magnetic field is shown to be oriented along the propagation direction of the control and probe beams containing OAM. Its spatial profile can be controlled by choosing proper laser beams. We demonstrate how to generate a constant effective magnetic field, as well as a field exhibiting a radial distance dependence. The resulting effective magnetic field can be concentrated within a region where the effective trapping potential holds the atoms. The estimated magnetic length can be considerably smaller than the size of the atomic cloud.

show abstract

Section: B Initial Equations Of Motionmentioning

confidence: 99%

Effective magnetic fields in degenerate atomic gases induced by light beams with orbital angular momenta

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Since then, numerous investigations, both experimental and theoretical, have been made into the collisional properties of many different homonuclear [2,3,4,5,6,7,8,9,10,11,12,13] and (later) heteronuclear [14,15,16,17,18,19] systems. Collisional studies are in themselves interesting, leading to an in-depth understanding of the various scattering mechanisms present at such low kinetic energies and methods by which we can have some measure of control over elastic and inelastic collisions.…”

Section: Introductionmentioning

confidence: 99%

Heteronuclear ionizing collisions between laser-cooled metastable helium atoms

et al. 2007

View full text Add to dashboard Cite

We have investigated cold ionizing heteronuclear collisions in dilute mixtures of metastable (2 3 S1) 3 He and 4 He atoms, extending our previous work on the analogous homonuclear collisions [R. J. W. Stas et al., PRA 73, 032713 (2006)]. A simple theoretical model of such collisions enables us to calculate the heteronuclear ionization rate coefficient, for our quasi-unpolarized gas, in the absence of resonant light (T = 1.2 mK): K (th) 34 = 2.4×10 −10 cm 3 /s. This calculation is supported by a measurement of K34 using magneto-optically trapped mixtures containing about 1×10 8 atoms of each species, K (exp) 34 = 2.5(8)×10 −10 cm 3 /s. Theory and experiment show good agreement.

show abstract

“…Experimental attention has extended to the properties of double Bose condensates [4,5] and more recently to the attainment of quantal degeneracy in gases of fermionic atoms [6 -10] and in dilute mixtures of bosons and fermions [11]. A specific motivation for interest in boson-fermion mixtures is that the collisions between fermions and bosons can foster thermalization of the fermionic component and induce so-called sympathetic cooling [4,12].…”

Section: Introductionmentioning

confidence: 99%

Schematic phase diagram and collective excitations in the collisional regime for trapped boson–fermion mixtures at zero temperature

Minguzzi

Tosi

2000

Physics Letters A

View full text Add to dashboard Cite

We discuss the ground state and the small-amplitude excitations of dilute bosonfermion mixtures confined in spherical harmonic traps at T = 0, assuming repulsive boson-boson interactions and with each component being in a single hyperfine state. From previous studies of the equilibrium density profiles we propose a schematic phase diagram in a plane defined by the variables a bf /a bb and a bb k (0) f , where a bb and a bf are the boson-boson and boson-fermion scattering lengths and k (0) f is the Fermi wave number at the centre of the trap. With this background we turn to the equations of motion for density fluctuations in the collisional regime and discuss some general features of the eigenmodes. We display analytic solutions for sound waves in a quasi-homogeneous mixture and for surface modes at weak fermion-boson coupling.

show abstract

Simultaneous magneto-optical trapping of two lithium isotopes

Cited by 83 publications

References 29 publications

Effective magnetic fields in degenerate atomic gases induced by light beams with orbital angular momenta

Effective magnetic fields in degenerate atomic gases induced by light beams with orbital angular momenta

Heteronuclear ionizing collisions between laser-cooled metastable helium atoms

Schematic phase diagram and collective excitations in the collisional regime for trapped boson–fermion mixtures at zero temperature

Contact Info

Product

Resources

About