Dual Spectroscopy of Quantum Simulated Fermi-Hubbard Systems

Abstract

Quantum gas microscopy with atoms in optical lattices provides remarkable insights into the real space properties of many-body systems, but does not directly reveal the nature of their fundamental excitation spectrum. Here, we demonstrate that radio-frequency spectroscopy can reveal the quasi-particle nature of doped quantum many-body systems, crucial for our understanding of, e.g., high-temperature superconductors. In particular, we showcase how the existence and energy of magnetic polaron quasi-particles in doped Fermi-Hubbard systems may be probed, revealed by hallmark peaks in the spectroscopic spectrum. In combination with fundamental dualities of the Fermi-Hubbard model, we describe how these findings may be tested using several experimental platforms.

9 pages, 3 figures

References in corpus (19)

• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
• Tools for quantum simulation with ultracold atoms in optical lattices
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• A Quantum Gas Microscope for Fermionic Atoms
• Repulsive Fermi polarons in a resonant mixture of ultracold ${}^6$Li atoms
• Quantum Simulation of the Hubbard Model: The Attractive Route
• Observation of Nagaoka Polarons in a Fermi-Hubbard Quantum Simulator
• Mediated interactions between Fermi polarons and the role of impurity quantum statistics
• Direct observation of non-local fermion pairing in an attractive Fermi-Hubbard gas
• On the sign structure of doped Mott insulators
• Directly imaging spin polarons in a kinetically frustrated Hubbard system
• Cold Attractive Spin Polarized Fermi Lattice Gases and the Doped Positive U Hubbard Model
• Life and death of the Bose polaron
• Unraveling the Excitation Spectrum of Many-Body Systems from Quantum Quenches
• Local quench spectroscopy of many-body quantum systems
• Nonequilibrium Hole Dynamics in Antiferromagnets: Damped Strings and Polarons
• Charge modulation as fingerprints of phase-string triggered interference
• Probing spectral features of quantum many-body systems with quantum simulators

Cited by in corpus (2)

• Spin-charge bound states and emerging fermions in a quantum spin liquid
• Beyond fragmented dopant dynamics in quantum spin lattices: Robust localization and non-Gaussian diffusion