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Data for: A linear response framework for simulating bosonic and fermionic correlation functions on quantum computers - MaRDI portal

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Data for: A linear response framework for simulating bosonic and fermionic correlation functions on quantum computers (Q6696480)

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Data for: A linear response framework for simulating bosonic and fermionic correlation functions on quantum computers
Dataset published at Zenodo repository.

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    Response functions are a fundamental aspect of physics; they represent the link between experimental observations and the underlying quantum many-body state. However, this link is often under-appreciated, as the Lehmann formalism for obtaining response functions in linear response has no direct link to experiments. Within the context of quantum computing, and by using a linear response framework, we restore this link by making the experiment an inextricable part of the quantum simulation. This method can be frequency- and momentum-selective, avoids limitations on operators that can be directly measured, and is ancilla-free. As prototypical examples of response functions, we demonstrate that both bosonic and fermionic Green's functions can be obtained, and apply these ideas to the study of a charge-density-wave material on {\emph{ibm\_auckland}}. The linear response method provides a robust framework for using quantum computers to study systems in physics and chemistry.
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    30 April 2024
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