Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap

TL;DR

This paper demonstrates a lossless, heating-free method to transport a quantum degenerate mixture of bosonic and fermionic gases over 6 mm in a harmonic trap, enhancing experimental flexibility and access.

Contribution

A novel, modified QUIC trap transport mechanism enabling lossless, heating-free movement of quantum gases over larger distances within the trap.

Findings

Transport is lossless and does not induce heating.

Allows improved magnetic field homogeneity and optical access.

Potential for cascading to larger distances.

Abstract

We report on the transport of mixed quantum degenerate gases of bosonic 87Rb and fermionic 40K in a harmonic potential provided by a modified QUIC trap. The samples are transported over a distance of 6 mm to the geometric center of the anti-Helmholtz coils of the QUIC trap. This transport mechanism was implemented by a small modification of the QUIC trap and is free of losses and heating. It allows all experiments using QUIC traps to use the highly homogeneous magnetic fields that can be created in the center of a QUIC trap and improves the optical access to the atoms, e.g., for experiments with optical lattices. This mechanism may be cascaded to cover even larger distances for applications with quantum degenerate samples.