AEQuO: A Comprehensive Measurement Allocation Protocol
The variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm for solving the electronic structure problem, a problem foundational to the field of computational chemistry. In the VQE, a classical optimizer directs the state preparation protocol while a quantum device is used to measure the expectation value of the Hamiltonian with the prepared state. We developed the adaptive estimation of quantum observables (AEQuO) protocol in an attempt to use all of information from the measurement outcomes to minimize the number of measurements needed. I will give an overview of the VQE and the techniques we employ in our protocol, and I will discuss where our approach fits in with the previous measurement allocation techniques.
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