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Updated: May 4, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model
Tobias Müller1,2, Ronny Thomale1,3, Subir Sachdev4
1Lehrstuhl für Theoretische Physik I, Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Julius-Maximilians-Universität Würzburg, Würzburg 97074, Germany.
Abstract:
We employ a family of ancilla qubit variational wave functions [Y.-H. Zhang and S. Sachdev, Phys. Rev. Res. 2, 023172 (2020)] to describe the polaronic correlations in the pseudogap metal phase of a hole-doped 2D Fermi-Hubbard model. Comparison to ultracold atom quantum simulator data [J. Koepsell et al., Science 374, 82 (2021)] reveals both qualitative and quantitative agreement with the numerical analysis from half-filling up to 80% hole-doping, capturing the crossover from the polaronic regime to the Fermi liquid observed around 40% doping.
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