Optimal cooling strategies for magnetically trapped atomic Fermi-Bose mixtures

Abstract

We discuss cooling efficiency for different-species Fermi-Bose mixtures in magnetic traps. A better heat capacity matching between the two atomic species is achieved by a proper choice of the Bose cooler and the magnetically trappable hyperfine states of the mixture. When a partial spatial overlap between the two species is also taken into account, the deepest Fermi degeneracy is obtained for an optimal value of the trapping frequency ratio. This can be achieved by assisting the magnetic trap with a deconfining light beam, as shown in the case of fermionic 6Li mixed with 23Na, 87Rb, and 133Cs, with optimal conditions found for the not yet explored 6Li-87Rb mixture.

arXiv comment5 pages, 3 figures, to appear in Physical Review A

References in corpus (32)

• Observation of resonance condensation of fermionic atom pairs
• Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
• Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
• A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Experimental Study of the BEC-BCS Crossover Region in Lithium 6
• Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Vortices in a trapped dilute Bose-Einstein condensate
• Resonance superfluidity in a quantum degenerate Fermi gas
• The BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
• Prospect of creating a composite fermi/bose superfluid
• Superfluidity of spin-polarized 6Li
• Zero-temperature phase diagram of binary boson-fermion mixtures
• Fifty-fold improvement in the number of quantum degenerate fermionic atoms
• Collisional properties of ultracold K-Rb mixtures
• Pairing gap and in-gap excitations in trapped fermionic superfluids
• Structure and stability of trapped atomic boson-fermion mixtures
• Ground-state properties of a dilute Bose-Fermi mixture
• Signatures of resonance superfluidity in a quantum Fermi gas
• Superfluidity in sympathetic cooling with atomic Bose condensates
• Degenerate fermion gas heating by hole creation
• Induced instability for boson-fermion mixed condensate of Alkali atoms due to attractive boson-fermion interaction
• Temperature-dependent density profiles of trapped boson-fermion mixtures
• Zero sound density oscillations in Fermi-Bose mixtures
• Phonon spectrum and dynamical stability of a quantum degenerate Bose-Fermi mixture
• Reaching Fermi degeneracy in two-species optical dipole traps
• Cooling dynamics of ultracold two-species Fermi-Bose mixtures
• Ultracold atomic Fermi-Bose mixtures in bichromatic optical dipole traps: a novel route to study fermion superfluidity
• Limits of sympathetic cooling of fermions by zero temperature bosons due to particle losses
• Condensate Heating by Atomic Losses
• Limits of sympathetic cooling of fermions: The role of the heat capacity of the coolant

Cited by in corpus (10)

• Cooling and thermometry of atomic Fermi gases
• Feshbach resonances in mixtures of ultracold ${}^6$Li and ${}^{87}$Rb gases
• Optimized production of large Bose Einstein Condensates
• Optimized sympathetic cooling of atomic mixtures via fast adiabatic strategies
• Regulating entanglement production in multitrap Bose-Einstein condensates
• Atom-number squeezing and bipartite entanglement of two-component Bose-Einstein condensates: analytical results
• Thermodynamical approaches to efficient sympathetic cooling in ultracold Fermi-Bose atomic mixtures
• Effective microscopic models for sympathetic cooling of atomic gases
• Sympathetic cooling route to Bose-Einstein condensate and Fermi-liquid mixtures
• Development of an apparatus for cooling 6Li-87Rb Fermi-Bose mixtures in a light-assisted magnetic trap