A Method to Calculate Correlation for Density Functional Theory on a Quantum Processor

Abstract

An extension of the Variational Quantum Eigensolver (VQE) method is presented where a quantum computer generates an accurate exchange-correlation potential for a Density Functional Theory (DFT) simulation on classical hardware. The method enables efficient simulations of quantum systems by interweaving calculations on classical and quantum resources. DFT is implemented on classical hardware, which enables the efficient representation of and operation on quantum systems while being formally exact. The portion of the simulation operating on quantum hardware produces an accurate exchange-correlation potential but only requires relatively short depth quantum circuits.

12 pages. 1 figure

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Cited by in corpus (4)

• Quantum computational chemistry
• Solver for the electronic V-representation problem of time-dependent density functional theory
• A comparison of three ways to measure time-dependent densities with quantum simulators
• Toward Density Functional Theory on Quantum Computers?