Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures

Abstract

Based on an experimental study of two-body and three-body collisions in ultracold strontium samples, a novel optical-sympathetic cooling method in isotopic mixtures is demonstrated. Without evaporative cooling, a phase-space density of $6\times 10^{-2}$ is obtained with a high spatial density that should allow to overcome the difficulties encountered so far to reach quantum degeneracy for Sr atoms.

arXiv comment5 pages, 4 figures

References in corpus (13)

• Recoil-free spectroscopy of neutral Sr atoms in the Lamb-Dicke regime
• Spectroscopy of the ${}^1{S}_0-{}^3{P}_0$ Clock Transition of ${}^{87}$Sr in an Optical Lattice
• Sympathetic cooling of bosonic and fermionic Lithium gases towards quantum degeneracy
• Properties of metastable alkaline-earth-metal atoms calculated using an accurate effective core potential
• Optical tuning of the scattering length of cold alkaline earth atoms
• Coherent light transport in a cold Strontium cloud
• Precision spectroscopy and density-dependent frequency shifts in ultracold Sr
• Narrow Line Cooling: Finite Photon Recoil Dynamics
• Precision frequency measurement of visible intercombination lines of strontium
• A clock transition for a future optical frequency standard with trapped atoms
• Spectroscopic determination of the s-wave scattering lengths of 86Sr and 88Sr
• Ultracold collision properties of metastable alkaline-earth atoms
• Cooling and trapping of ultra-cold strontium isotopic mixtures

Cited by in corpus (22)

• Ultracold Fermi Gases with Emergent SU(N) Symmetry
• Long-lived Bloch oscillations with bosonic Sr atoms and application to gravity measurement at micrometer scale
• Bose-Einstein Condensation of Strontium
• Degenerate Fermi Gas of ${}^{87}$Sr
• Testing gravity with cold atom interferometry: Results and prospects
• Quantum degenerate mixtures of strontium and rubidium atoms
• Coherent Delocalization of Atomic Wave Packets in Driven Lattice Potentials
• Two-photon photoassociative spectroscopy of ultracold 88-Sr
• Production of quantum degenerate strontium gases: Larger, better, faster, colder
• Large-momentum-transfer Bragg interferometer with strontium atoms
• Fourier-transform spectroscopy of Sr2 and revised ground state potential
• Bose-Einstein Condensation of ${}^{88}$Sr Through Sympathetic Cooling with ${}^{87}$Sr
• A quantum sensor for atom-surface interactions below 10 $\mu$m
• Bose-Einstein condensation of 86Sr
• Mass scaling and non-adiabatic effects in photoassociation spectroscopy of ultracold strontium atoms
• Laser cooling and trapping of atomic strontium for ultracold atom physics, high-precision spectroscopy and quantum sensors
• Three dimensional cooling and trapping with a narrow line
• Trapped Bose-Einstein condensates with Planck-scale induced deformation of the energy-momentum dispersion relation
• Long range transport of ultra cold atoms in a far-detuned 1D optical lattice
• Numerical modeling of collisional dynamics of Sr in an optical dipole trap
• Enhanced Magnetic Trap Loading for Atomic Strontium
• Photoionization cross sections of ultracold ${}^{88}$Sr in ${}^1$P${}_1$ and ${}^3$S${}_1$ states at 390 nm and the resulting blue-detuned magic wavelength optical lattice clock constraints