Year: 2020
Type: article
Abstract: Quantum interference lies at the heart of quantum mechanics. By utilizing destructive interference, it is possible to transfer a physical object between two states without populating an intermediate state which is necessary to connect the initial and final states. A famous application is a technique of stimulated Raman adiabatic passage, where atomic internal states can be transfered with high efficiency regardless of lossy intermediate states. One interesting situation is a case where the initial and final states are spatially well separated. Quantum mechanics allows a particle to move without practical possibility of being found at the intermediate area. Here we demonstrate this spatial adiabatic passage with ultracold atoms in an optical lattice. Key to this is the existence of dark eigenstates forming a flat energy band, with effective transfer between two sublattices being observed. This work sheds light on a study of coherent control of trapped cold atoms.
Source: Nature Communications
Authors: Shintaro Taie, Tomohiro Ichinose, Hideki Ozawa, Yoshiro Takahashi
Institution: Kyoto University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,380
Awards: G1203979207, Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to cold atoms, G3303923392, G3317690773, G3724406685, G3824370463, G4026608653, G4069358888, G4424987081, G5412166506, G5523010673, Exploration of new quantum condensed phase by exploiting orbital and spin degrees of freedom of ultracold atomic gases in an optical lattice, G652508916, G6618022582, G6718509927, Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts, New stage of research of novel quantum condensed phase developed by ultimate control and measurement of ytterbium quantum gases in an optical lattice, G7879866177, G8418054547, G90803353
OpenAlex ID: W2998800995