Signatures of unconventional pairing in spin-imbalanced one-dimensional few-fermion systems
Quantum Gases
2020-04-01 v2 Superconductivity
Quantum Physics
Abstract
A system of a few attractively interacting fermionic Li atoms in one-dimensional harmonic confinement is investigated. Non-trivial inter-particle correlations induced by interactions in a particle-imbalanced system are studied in the framework of the noise correlation. In this way, it is shown that evident signatures of strongly correlated fermionic pairs in the Fulde-Ferrell-Larkin-Ovchinnikov state are present in the system and they can be detected by measurements directly accessible within state-of-the-art techniques. The results convincingly show that the exotic pairing mechanism is a very universal phenomenon and can be captured in systems being essentially non-uniform and far from the many-body limit.
Keywords
Cite
@article{arxiv.1911.04187,
title = {Signatures of unconventional pairing in spin-imbalanced one-dimensional few-fermion systems},
author = {Daniel Pęcak and Tomasz Sowiński},
journal= {arXiv preprint arXiv:1911.04187},
year = {2020}
}