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

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 qua...

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Bibliographic Details
Published in:arXiv.org 2021-12
Main Authors: Paula Cordero Encinar, Agustí, Andrés, Sabín, Carlos
Format: Article
Language:English
Subjects:
Beam splitters
Compressing
Quantum computers
Qubits (quantum computing)
Simulation
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2104.09442