Efficient bosonic nonlinear phase gates

Abstract Continuous-variable (CV) quantum information processing harnesses versatile experimental tools that leverage the power of infinite-dimensional oscillators controlled by a single qubit. Increasingly available elementary Rabi gates have been proposed as a resource for implementing universal C...

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Main Authors: Kimin Park, Radim Filip
Format: Article
Language:English
Published: Nature Portfolio 2024-02-01
Series:npj Quantum Information
Online Access:https://doi.org/10.1038/s41534-024-00816-x
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author Kimin Park
Radim Filip
author_facet Kimin Park
Radim Filip
author_sort Kimin Park
collection DOAJ
description Abstract Continuous-variable (CV) quantum information processing harnesses versatile experimental tools that leverage the power of infinite-dimensional oscillators controlled by a single qubit. Increasingly available elementary Rabi gates have been proposed as a resource for implementing universal CV gates, but the requirement of many weak, non-commuting gates is a bottleneck in scaling up such an approach. In this study, we propose a resource-efficient technique using Fourier expansion to implement arbitrary non-linear phase gates in a single oscillator. This method reduces the number of sequentially required gates exponentially. These gates represented by cubic, quartic, and other arbitrary nonlinear potentials have applications in CV quantum information processing with infinite-dimensional oscillators controlled by a single qubit. Our method outperforms previous approaches and enables the experimental realization of a wide range of applications, including the development of bosonic quantum sensors, simulations, and computation using trapped ions and superconducting circuits.
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spelling doaj.art-578d6604fdb642a8ac49e74bcd3cc9342024-03-05T19:52:28ZengNature Portfolionpj Quantum Information2056-63872024-02-011011610.1038/s41534-024-00816-xEfficient bosonic nonlinear phase gatesKimin Park0Radim Filip1Department of Optics, Palacky UniversityDepartment of Optics, Palacky UniversityAbstract Continuous-variable (CV) quantum information processing harnesses versatile experimental tools that leverage the power of infinite-dimensional oscillators controlled by a single qubit. Increasingly available elementary Rabi gates have been proposed as a resource for implementing universal CV gates, but the requirement of many weak, non-commuting gates is a bottleneck in scaling up such an approach. In this study, we propose a resource-efficient technique using Fourier expansion to implement arbitrary non-linear phase gates in a single oscillator. This method reduces the number of sequentially required gates exponentially. These gates represented by cubic, quartic, and other arbitrary nonlinear potentials have applications in CV quantum information processing with infinite-dimensional oscillators controlled by a single qubit. Our method outperforms previous approaches and enables the experimental realization of a wide range of applications, including the development of bosonic quantum sensors, simulations, and computation using trapped ions and superconducting circuits.https://doi.org/10.1038/s41534-024-00816-x
spellingShingle Kimin Park
Radim Filip
Efficient bosonic nonlinear phase gates
npj Quantum Information
title Efficient bosonic nonlinear phase gates
title_full Efficient bosonic nonlinear phase gates
title_fullStr Efficient bosonic nonlinear phase gates
title_full_unstemmed Efficient bosonic nonlinear phase gates
title_short Efficient bosonic nonlinear phase gates
title_sort efficient bosonic nonlinear phase gates
url https://doi.org/10.1038/s41534-024-00816-x
work_keys_str_mv AT kiminpark efficientbosonicnonlinearphasegates
AT radimfilip efficientbosonicnonlinearphasegates