Angle-resolved photoemission spectroscopy with quantum gas microscopes

Abstract

Quantum gas microscopes are a promising tool to study interacting quantum many-body systems and bridge the gap between theoretical models and real materials. So far they were limited to measurements of instantaneous correlation functions of the form $⟨\hat{O}(t)⟩$, even though extensions to frequency-resolved response functions $⟨\hat{O}(t)\hat{O}(0)⟩$ would provide important information about the elementary excitations in a many-body system. For example, single particle spectral functions, which are usually measured using photoemission experiments in electron systems, contain direct information about fractionalization and the quasiparticle excitation spectrum. Here, we propose a measurement scheme to experimentally access the momentum and energy resolved spectral function in a quantum gas microscope with currently available techniques. As an example for possible applications, we numerically calculate the spectrum of a single hole excitation in one-dimensional $t-J$ models with isotropic and anisotropic antiferromagnetic couplings. A sharp asymmetry in the distribution of spectral weight appears when a hole is created in an isotropic Heisenberg spin chain. This effect slowly vanishes for anisotropic spin interactions and disappears completely in the case of pure Ising interactions. The asymmetry strongly depends on the total magnetization of the spin chain, which can be tuned in experiments with quantum gas microscopes. An intuitive picture for the observed behavior is provided by a slave-fermion mean field theory. The key properties of the spectra are visible at currently accessible temperatures.

16+7 pages, 10+2 figures

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• Bragg spectroscopy of a strongly interacting Fermi gas
• Measuring the one-particle excitations of ultracold fermionic atoms by stimulated Raman spectroscopy
• Probing nearest-neighbor correlations of ultracold fermions in an optical lattice
• String excitations of a hole in a quantum antiferromagnet and photoelectron spectrospopy
• Scanning tunnelling microscopy for ultracold atoms
• Matter wave Fourier optics with a strongly interacting two-dimensional Fermi gas
• Polaronic properties of an impurity in a Bose-Einstein condensate in reduced dimensions
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Cited by in corpus (53)

• Quantum gas microscopy for single atom and spin detection
• Statistical localization: from strong fragmentation to strong edge modes
• Exploration of doped quantum magnets with ultracold atoms
• Robust Bilayer Charge-Pumping for Spin- and Density-Resolved Quantum Gas Microscopy
• Realizing Altermagnetism in Fermi-Hubbard Models with Ultracold Atoms
• High-harmonic generation in one-dimensional Mott insulator
• Microscopic spinon-chargon theory of magnetic polarons in the t-J model
• Angle-resolved photoemission spectroscopy of a Fermi-Hubbard system
• Parton theory of ARPES spectra in anti-ferromagnetic Mott insulators
• Meson formation in mixed-dimensional t-J models
• A self-consistent Hartree-Fock approach to Many-Body Localization
• Hole Spectral Function of a Chiral Spin Liquid in the Triangular Lattice Hubbard Model
• Real-time spin-charge separation in one-dimensional Fermi gases from generalized hydrodynamics
• Photo-induced nonequilibrium states in Mott insulators
• Variational cluster approach to thermodynamic properties of interacting fermions at finite temperatures: A case study of the two-dimensional single-band Hubbard model at half filling
• Nonequilibrium Hole Dynamics in Antiferromagnets: Damped Strings and Polarons
• Emergence and disruption of spin-charge separation in one-dimensional repulsive fermions
• Time and momentum-resolved tunneling spectroscopy of pump-driven non-thermal excitations in Mott insulators
• Neural network approach to quasiparticle dispersions in doped antiferromagnets
• Frustrated extended Bose-Hubbard model and deconfined quantum critical points with optical lattices at the anti-magic wavelength
• Rotational Resonances and Regge Trajectories in Lightly Doped Antiferromagnets
• Defect-induced orbital polarization and collapse of orbital order in doped vanadium perovskites
• Enhancement of chiral edge currents in ($d$+1)-dimensional atomic Mott-band hybrid insulators
• Proposal for asymmetric photoemission and tunneling spectroscopies in quantum simulators of the triangular-lattice Fermi-Hubbard model
• Exact spectral function of a Tonks-Girardeau gas in a lattice
• Observation of emergent scaling of spin-charge correlations at the onset of the pseudogap
• Finite-Temperature Hole-Magnon Dynamics in an Antiferromagnet
• Dichotomy of heavy and light pairs of holes in the $t-J$ model
• Exact Dynamical Correlations of Hard-Core Anyons in One-Dimensional Lattices
• Fermionic matter-wave quantum optics with cold-atom impurity models
• Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization
• The dynamic structure factor in impurity-doped spin chains
• Ultrafast control of spin-orbital separation probed with time-resolved RIXS
• Pump-probe spectroscopy of the one-dimensional extended Hubbard model at half filling
• Exact dynamics of two holes in two-leg antiferromagnetic ladders
• Exact spectral function of the Tonks-Girardeau gas at finite temperature
• Many-body effects on high-harmonic generation in Hubbard ladders
• Efficiently measuring $d$-wave pairing and beyond in quantum gas microscopes
• Emergence of anyonic correlations from spin and charge dynamics in one dimension
• Particle zoo in a doped spin chain: Correlated states of mesons and magnons
• Dual Spectroscopy of Quantum Simulated Fermi-Hubbard Systems
• Ultrafast X-ray Absorption Spectroscopy of Strongly Correlated Systems: Core Hole Effect
• Dissipative Superfluidity in a Molecular Bose-Einstein Condensate
• Interaction effects of pseudospin-based magnetic monopoles and kinks in a doped dipolar superlattice gas
• Signatures of correlated magnetic phases in the local two-particle density matrix
• Time evolution of the local density of states of strongly correlated fermions coupled to a nanoprobe
• Boundary logarithmic corrections to the dynamical correlation functions of one-dimensional spin-1/2 chains
• Time-resolved single-particle spectrum of the one-dimensional extended Hubbard model after interaction quenches
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy
• Photoemission Signatures of Photoinduced Carriers and Excitons in One-Dimensional Mott Insulators
• Fractionalized Prethermalization in the One-Dimensional Hubbard Model
• Theory of Angle Resolved Photoemission Spectroscopy of Altermagnetic Mott Insulators
• Asymptotic behavior of correlation functions of one-dimensional polar-molecules on optical lattices