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arXiv · 2104.09442

Digital quantum simulation of beam splitters and squeezing with IBM quantum computers

Paula Cordero Encinar·Andrés Agustí·Carlos Sabín
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Abstract

We present results on the digital quantum simulations of beam-splitter and squeezing interactions. The bosonic hamiltonians are mapped to qubits and then digitalized in order to implement them in the IBM quantum devices. We use error mitigation and post-selection to achieve high-fidelity digital quantum simulations of single-mode and two-mode interactions, as evidenced -- where possible -- by full tomography of the resulting states. We achieve fidelities above 90 \% in the case of single-mode squeezing with low squeezing values and ranging from 60 \% to 90 \% for large squeezing and in the more complex two-mode interactions.

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Paula Cordero Encinar, Andrés Agustí, Carlos Sabín. 2021-04-19. Digital quantum simulation of beam splitters and squeezing with IBM quantum computers. https://doi.org/10.1103/physreva.104.052609

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