Coherent Oscillations in Small Fermi Polaron Systems

Abstract

We study the ground state and excitations of a one-dimensional trapped polarized Fermi gas interacting with a single impurity. First, we study the tunnelling dynamics of the impurity through a potential barrier, such as one effectively created by a double-well trap. To this end, we perform an exact diagonalization of the full few-body Hamiltonian and analyze the results in a Local Density Approximation. Off-diagonal and one-particle correlation matrices are studied and are shown to be useful for discerning between different symmetries of the states. Second, we consider a radio-frequency (RF) spectroscopy of our system and the resulting spectral function. These calculations can motivate future experiments, which can provide a further insight into the physics of a Fermi polaron.

arXiv comment9 pages, 12 figures

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Cited by in corpus (19)

• Polaron Interactions and Bipolarons in One-Dimensional Bose Gases in the Strong Coupling Regime
• Correlated Tunneling Dynamics of an Ultracold Fermi-Fermi Mixture Confined in a Double-Well
• Correlated dynamics of fermionic impurities induced by the counterflow of an ensemble of fermions
• Effective three-body interactions for bosons in a double-well confinement
• Many-body quantum dynamics of an asymmetric bosonic Josephson junction
• Dynamics of spin and density fluctuations in strongly interacting few-body systems
• Effective two-mode description of a few ultra-cold bosons in a double-well potential
• Collisional dynamics of polaronic clouds immersed in a Fermi sea
• Interaction-controlled impurity transport in trapped mixtures of ultracold bosons
• Emergence of junction dynamics in a strongly interacting Bose mixture
• Dynamical properties of a few mass-imbalanced ultra-cold fermions confined in a double-well potential
• State transfer in an inhomogeneous spin chain
• Ground-State Magnetization in Mixtures of a Few Ultra-Cold Fermions in One-Dimensional Traps
• Intra- and interband excitations induced residue decay of the Bose polaron in a one-dimensional double-well
• Impact of quantum coherence on the dynamics and thermodynamics of quenched free fermions coupled to a localized defect
• Dynamical resistivity of a few interacting fermions to the time-dependent potential barrier
• Magnetic monopole induced polarons in atomic superlattices
• Systematic interpolatory ansatz for one-dimensional polaron systems
• Several fermions strongly interacting with a heavy mobile impurity in a one-dimensional harmonic trap