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Quantum-Classical Simulation of Dynamical Mean-Field Theory Using Coupled-Cluster Methods

ORAL

Abstract

We propose a new method of calculating Green’s functions on a quantum computer in the time domain for condensed matter applications using coupled cluster methods. This approach removes the quantum complexity of state preparation and eliminates the need to make any assumptions about the ground state of the system. As a test case, and to assess the scalability of the method, we applied our approach to the single-impurity Anderson model (SIAM) employed in dynamical mean-field theory. As a specific example, we present results for running the procedure for a two-site SIAM on a quantum simulator.

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Presenters

  • Trevor Keen

    Department of Physics and Astronomy, University of Tennessee

Authors

  • Trevor Keen

    Department of Physics and Astronomy, University of Tennessee

  • Bo Peng

    Physical Sciences and Computation Division, Pacific Northwest National Lab, Pacific Northwest National Laboratory

  • Karol Kowalski

    Physical Sciences and Computation Division, Pacific Northwest National Lab, Pacific Northwest National Laboratory

  • Pavel Lougovski

    Amazon Web Services, Oak Ridge National Lab, Oak Ridge National Laboratory

  • Steven S. Johnston

    Department of Physics and Astronomy, University of Tennessee, Department of Physics and Astronomy and Joint Institute of Advanced Materials, The University of Tennessee, Knoxville, Tennessee 37996, USA, University of Tennessee, University of Tennessee, Knoxville