Year: 2021
Type: article
Abstract: Quantum transport is ubiquitous in physics. So far, quantum transport between terminals has been extensively studied in solid state systems from the fundamental point of views such as the quantized conductance to the applications to quantum devices. Recent works have demonstrated a cold-atom analog of a mesoscopic conductor by engineering a narrow conducting channel with optical potentials, which opens the door for a wealth of research of atomtronics emulating mesoscopic electronic devices and beyond. Here we realize an alternative scheme of the quantum transport experiment with ytterbium atoms in a two-orbital optical lattice system. Our system consists of a multi-component Fermi gas and a localized impurity, where the current can be created in the spin space by introducing the spin-dependent interaction with the impurity. We demonstrate a rich variety of localized-impurity-induced quantum transports, which paves the way for atomtronics exploiting spin degrees of freedom.
Source: Nature Communications
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,560
Awards: G3317690773, G3323663410, G3702797741, G3724406685, G3824370463, G4026608653, G5523010673, Exploration of new quantum condensed phase by exploiting orbital and spin degrees of freedom of ultracold atomic gases in an optical lattice, Quantum simulation of Kondo effect with two-orbital system, New developments in atomtronics, Construction of effective theories based on hidden symmetries and their application to strongly correlated quantum liquids, G6718509927, Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts, G7464644734, G7879866177, G90803353
OpenAlex ID: W3156797616