Expansion of 1D polarized superfluids: The FFLO state reveals itself

Abstract

We study the expansion dynamics of a one dimensional polarized Fermi gas after sudden release from confinement using both the mean-field Bogoliubov-de Gennes and the numerically exact Time-Evolving Block Decimation methods. Our results show that experimentally observable spin density modulations directly related to the presence of a Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state develop during the expansion of the cloud, providing incontrovertible evidence of this long-sought state.

arXiv comment4 pages, 5 figures + 2 pages of supplementary material

References in corpus (27)

• Efficient simulation of one-dimensional quantum many-body systems
• Observation of resonance condensation of fermionic atom pairs
• Pairing and Phase Separation in a Polarized Fermi Gas
• Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
• Inhomogeneous Superconductivity in Condensed Matter and QCD
• Spin-Imbalance in a One-Dimensional Fermi Gas
• Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
• Collective Oscillations of an Imbalanced Fermi Gas: Axial Compression Modes and Polaron Effective Mass
• Attractive Fermi gases with unequal spin populations in highly elongated traps
• Pairing states of a polarized Fermi gas trapped in a one-dimensional optical lattice
• Direct Imaging of Spatially Modulated Superfluid Phases in Atomic Fermion Systems
• Quasi-one-dimensional polarized Fermi superfluids
• Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in one-dimensional optical lattices
• Phase Transitions and Pairing Signature in Strongly Attractive Fermi Atomic Gases
• Exact quantum Monte Carlo study of one dimensional trapped fermions with attractive contact interactions
• Fulde-Ferrell-Larkin-Ovchinnikov states in one-dimensional spin-polarized ultracold atomic Fermi gases
• Theory of quasi-one dimensional imbalanced Fermi gases
• Paired states in spin-imbalanced atomic Fermi gases in one dimension
• Realization and Detection of Fulde-Ferrell-Larkin-Ovchinnikov Superfluid Phases in Trapped Atomic Fermion Systems
• Expansion dynamics of the Fulde-Ferrell-Larkin-Ovchinnikov state
• Asymptotic correlation functions and FFLO signature for the one-dimensional attractive spin-1/2 Fermi gas
• Concomitant Modulated Superfluidity In Polarized Fermionic Gases
• Ground states and dynamics of population-imbalanced Fermi condensates in one dimension
• Interferometric probe of paired states
• Bogoliubov-de Gennes study of trapped spin-imbalanced unitary Fermi gases
• Proposal for interferometric detection of topological defects in modulated superfluids
• Josephson effect in an atomic Fulde-Ferrell-Larkin-Ovchinnikov superfluid

Cited by in corpus (29)

• Fermi gases in one dimension: From Bethe Ansatz to experiments
• The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
• Quench dynamics of a Tonks-Girardeau gas released from a harmonic trap
• Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases
• Long-time behavior of the momentum distribution during the sudden expansion of a spin-imbalanced Fermi gas in one dimension
• Non-Equilibrium Mass Transport in the 1D Fermi-Hubbard Model
• Fulde-Ferrell Pairing instability in Spin-Orbit Coupled Fermi Gas
• Fulde-Ferrell states and Berezinskii-Kosterlitz-Thouless phase transition in two-dimensional imbalanced Fermi gases
• Pair tunneling, phase separation and dimensional crossover in imbalanced fermionic superfluids in a coupled array of tubes
• Wilson ratio of Fermi gases in one dimension
• Interaction quantum quenches in the one-dimensional Fermi-Hubbard model with spin imbalance
• Creation and dynamics of remote spin-entangled pairs in the expansion of strongly correlated fermions in an optical lattice
• Unveiling hidden structure of many-body wavefunctions of integrable systems via sudden expansion experiments
• Critical phenomena in one dimension from a Bethe ansatz perspective
• Enhanced visibility of the Fulde-Ferrell-Larkin-Ovchinnikov state in one dimensional Bose-Fermi mixtures near the immiscibility point
• Spin-orbit-coupled topological Fulde-Ferrell states of fermions in a harmonic trap
• Dimensional Crossover in a Spin-imbalanced Fermi gas
• Quantum Coherent States of Interacting Bose-Fermi Mixtures in One Dimension
• Density-Matrix Renormalization Group for Continuous Quantum Systems
• Simulating artificial one-dimensional physics with ultra-cold fermionic atoms: three exemplary themes
• Spin-imbalanced ultracold Fermi gases in a two-dimensional array of tubes
• Protocol to engineer Fulde-Ferrell-Larkin-Ovchinnikov states in a cold Fermi gas
• Do phase fluctuations influence the Fulde-Ferrell-Larkin-Ovchinnikov state in a 3D Fermi gas?
• Pairing correlations in a trapped one-dimensional Fermi gas
• Hartree-Fock-Bogoliubov theory of trapped one-dimensional imbalanced Fermi systems
• Jackiw-Rebbi-type bound state carrying fractional fermion parity
• Bose-Hubbard model with occupation-parity couplings
• Trapped imbalanced fermionic superfluids in one dimension: A variational approach
• Unconventional pairing in few-fermion systems tuned by external confinement