Cooling Dynamics of Ultracold Two-Species Fermi-Bose Mixtures

2003/01/24 by Carlo Presilla, Roberto Onofrio
Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Degeneracy (biology) #Dipole #Evaporative cooler #Fermi Gamma-ray Space Telescope #Fermi gas #Optical lattice #Phase transition #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Superfluidity #Thermodynamics #cond-mat

paper · pdf · doi:10.1103/physrevlett.90.030404

published as Phys. Rev. Lett. 90, 030404 (2003) · 4 pages, 3 figures

openalex publication_date 2003/01/24 · arxiv created 2003/01/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We compare strategies for evaporative and sympathetic cooling of two-species Fermi-Bose mixtures in single-color and two-color optical dipole traps. We show that in the latter case a large heat capacity of the bosonic species can be maintained during the entire cooling process. This could allow one to efficiently achieve a deep Fermi degeneracy regime having at the same time a significant thermal fraction for the Bose gas, crucial for a precise thermometry of the mixture. Two possible signatures of a superfluid phase transition for the Fermi species are discussed.

Citations

• Superfluidity of Spin-Polarized6Li
• Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions
• Prospect of creating a composite Fermi–Bose superfluid
• Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
• Observation of Fermi Pressure in a Gas of Trapped Atoms
• Periodically Dressed Bose-Einstein Condensate: A Superfluid with an Anisotropic and Variable Critical Velocity
• All-Optical Production of a Degenerate Fermi Gas
• Sympathetic Cooling with Two Atomic Species in an Optical Trap
• Bose-Einstein Condensation in a Gas of Sodium Atoms
• Resonance Superfluidity in a Quantum Degenerate Fermi Gas