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

• URL: http://arxiv.org/abs/2104.09442v3
• Date: Mon, 20 Dec 2021 08:57:43 GMT
• Title: Digital quantum simulation of beam splitters and squeezing with IBM quantum computers
• Authors: Paula Cordero Encinar, Andr\'es Agust\'i and Carlos Sab\'in
• Abstract summary: We present results on the digital quantum simulations of beam-splitter and squeezing interactions. We use error mitigation and post-selection to achieve high-fidelity digital quantum simulations of single-mode and two-mode interactions.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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