Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

EPJ Web of Conferences

Doppler velocimetry of spin and charge currents in the 2D Fermi gas

J. D. Koralek, Luyi Yang, D. R. Tibbetts, John L. Reno, M. P. Lilly, J. Orenstein

Published Jan 1, 2013• 0 citations
Publisher

Abstract

Phase-sensitive transient grating spectroscopy was used to measure the Doppler shift of light diffracted off moving spin and charge density waves, allowing complete characterization of spin and charge transport in the 2D Fermi gas.
DOI
10.1051/epjconf/20134103017

Related papers

New relations between spin and charge dynamics of the Fermi Hubbard model

Hui Zhai, Ning Sun, Jinlong Yu +1 more

Utilizing the Fermi gas microscope, recently the MIT group has measured the spin transport of the Fermi Hubbard model (FHM) starting from a spin-density-wave state, and the Princeton group has measured the charge transport of the FHM starting from a charge-density-wave state. Motivated by these two experiments, we prove a theorem that shows under certain conditions, the spin and charge transports can be equivalent to each other. The proof makes use of the particle-hole transformation of the FHM and a recently discovered symmetry protected dynamical symmetry. Our results can be directly verified in future cold atom experiment with the Fermi gas microscope.

arXiv:1808.07225•New Journal of Physics•Dec 20, 2018•2 citations

Observation of quantum-limited spin transport in strongly interacting two-dimensional Fermi gases

Ben A. Olsen, C. Luciuk, Scott Smale +5 more

Bulletin of the American Physical Society•Jun 7, 2017•11 citations

Luther-Emery Phase and Atomic-Density Waves in a Trapped Fermion Gas

Gao Xianlong, Matteo Rizzi, Marco Polini +4 more

The Luther-Emery liquid is a state of matter that is predicted to occur in one-dimensional systems of interacting fermions and is characterized by a gapless charge spectrum and a gapped spin spectrum. In this Letter we discuss a realization of the Luther-Emery phase in a trapped cold-atom gas. We study by means of the density-matrix renormalization-group technique a two-component atomic Fermi gas with attractive interactions subject to parabolic trapping inside an optical lattice. We demonstrate how this system exhibits compound phases characterized by the coexistence of spin pairing and atomic-density waves. A smooth crossover occurs with increasing magnitude of the atom-atom attraction to a state in which tightly bound spin-singlet dimers occupy the center of the trap. The existence of atomic-density waves could be detected in the elastic contribution to the light-scattering diffraction pattern.

arXiv:cond-mat/0609346•Physical Review Letters•Jan 18, 2007•51 citations

Observation of spin and charge excitations in a strongly interacting 1D Fermi Gas

Ruwan Senaratne, Danyel Cavazos-Cavazos, Ya-Ting Chang +1 more

Bulletin of the American Physical Society•Mar 16, 2021•0 citations

Moving evanescent light grating for the diffraction of atoms

B. W. Stenlake, Ian C. M. Littler, Peter Fisk +2 more

In order to diffract atoms from an evanescent light reflection grating the Rabi frequency must be greater than the Doppler shift associated with the atomic velocity. For thermal atoms this cannot be achieved using dye lasers. Rather than slow the atoms we have produced a moving light grating and observe resonances in the reflectivity of the grating for certain grating velocities. The position of these resonances fulfils the Doppleron condition Δ’=nΔD’, which is consistent with a dressed state model for diffraction from such a grating.

AIP conference proceedings•Jan 1, 1993•0 citations

Fermi spin current contribution in spin wave spectrum of spin-1/2 fermions

Pavel A. Andreev, L. S. Kuz’menkov

Bulletin of the American Physical Society•May 25, 2016•0 citations
Utilizing the Fermi gas microscope, recently the MIT group has measured the spin transport of the Fermi Hubbard model (FHM) starting from a spin-density-wave state, and the Princeton group has measured the charge transport of the FHM starting from a charge-density-wave state. Motivated by these two experiments, we prove a theorem that shows under certain conditions, the spin and charge transports can be equivalent to each other. The proof makes use of the particle-hole transformation of the FHM and a recently discovered symmetry protected dynamical symmetry. Our results can be directly verified in future cold atom experiment with the Fermi gas microscope.
The Luther-Emery liquid is a state of matter that is predicted to occur in one-dimensional systems of interacting fermions and is characterized by a gapless charge spectrum and a gapped spin spectrum. In this Letter we discuss a realization of the Luther-Emery phase in a trapped cold-atom gas. We study by means of the density-matrix renormalization-group technique a two-component atomic Fermi gas with attractive interactions subject to parabolic trapping inside an optical lattice. We demonstrate how this system exhibits compound phases characterized by the coexistence of spin pairing and atomic-density waves. A smooth crossover occurs with increasing magnitude of the atom-atom attraction to a state in which tightly bound spin-singlet dimers occupy the center of the trap. The existence of atomic-density waves could be detected in the elastic contribution to the light-scattering diffraction pattern.
In order to diffract atoms from an evanescent light reflection grating the Rabi frequency must be greater than the Doppler shift associated with the atomic velocity. For thermal atoms this cannot be achieved using dye lasers. Rather than slow the atoms we have produced a moving light grating and observe resonances in the reflectivity of the grating for certain grating velocities. The position of these resonances fulfils the Doppleron condition Δ’=nΔD’, which is consistent with a dressed state model for diffraction from such a grating.