Quantum Circuits for partial differential equations via Schrödingerisation

Quantum computing has emerged as a promising avenue for achieving significant speedup, particularly in large-scale PDE simulations, compared to classical computing. One of the main quantum approaches involves utilizing Hamiltonian simulation, which is directly applicable only to Schrödinger-type equ...

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Main Authors: Junpeng Hu, Shi Jin, Nana Liu, Lei Zhang
Format: Article
Language:English
Published: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 2024-12-01
Series:Quantum
Online Access:https://quantum-journal.org/papers/q-2024-12-12-1563/pdf/
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author Junpeng Hu
Shi Jin
Nana Liu
Lei Zhang
author_facet Junpeng Hu
Shi Jin
Nana Liu
Lei Zhang
author_sort Junpeng Hu
collection DOAJ
description Quantum computing has emerged as a promising avenue for achieving significant speedup, particularly in large-scale PDE simulations, compared to classical computing. One of the main quantum approaches involves utilizing Hamiltonian simulation, which is directly applicable only to Schrödinger-type equations. To address this limitation, Schrödingerisation techniques have been developed, employing the warped transformation to convert general linear PDEs into Schrödinger-type equations. However, despite the development of Schrödingerisation techniques, the explicit implementation of the corresponding quantum circuit for solving general PDEs remains to be designed. In this paper, we present detailed implementation of a quantum algorithm for general PDEs using Schrödingerisation techniques. We provide examples of the heat equation, and the advection equation approximated by the upwind scheme, to demonstrate the effectiveness of our approach. Complexity analysis is also carried out to demonstrate the quantum advantages of these algorithms in high dimensions over their classical counterparts.
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publishDate 2024-12-01
publisher Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
record_format Article
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spelling doaj-art-bec3fec9cb4f43cb8924a40e29a200b62025-08-20T02:50:20ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2024-12-018156310.22331/q-2024-12-12-156310.22331/q-2024-12-12-1563Quantum Circuits for partial differential equations via SchrödingerisationJunpeng HuShi JinNana LiuLei ZhangQuantum computing has emerged as a promising avenue for achieving significant speedup, particularly in large-scale PDE simulations, compared to classical computing. One of the main quantum approaches involves utilizing Hamiltonian simulation, which is directly applicable only to Schrödinger-type equations. To address this limitation, Schrödingerisation techniques have been developed, employing the warped transformation to convert general linear PDEs into Schrödinger-type equations. However, despite the development of Schrödingerisation techniques, the explicit implementation of the corresponding quantum circuit for solving general PDEs remains to be designed. In this paper, we present detailed implementation of a quantum algorithm for general PDEs using Schrödingerisation techniques. We provide examples of the heat equation, and the advection equation approximated by the upwind scheme, to demonstrate the effectiveness of our approach. Complexity analysis is also carried out to demonstrate the quantum advantages of these algorithms in high dimensions over their classical counterparts.https://quantum-journal.org/papers/q-2024-12-12-1563/pdf/
spellingShingle Junpeng Hu
Shi Jin
Nana Liu
Lei Zhang
Quantum Circuits for partial differential equations via Schrödingerisation
Quantum
title Quantum Circuits for partial differential equations via Schrödingerisation
title_full Quantum Circuits for partial differential equations via Schrödingerisation
title_fullStr Quantum Circuits for partial differential equations via Schrödingerisation
title_full_unstemmed Quantum Circuits for partial differential equations via Schrödingerisation
title_short Quantum Circuits for partial differential equations via Schrödingerisation
title_sort quantum circuits for partial differential equations via schrodingerisation
url https://quantum-journal.org/papers/q-2024-12-12-1563/pdf/
work_keys_str_mv AT junpenghu quantumcircuitsforpartialdifferentialequationsviaschrodingerisation
AT shijin quantumcircuitsforpartialdifferentialequationsviaschrodingerisation
AT nanaliu quantumcircuitsforpartialdifferentialequationsviaschrodingerisation
AT leizhang quantumcircuitsforpartialdifferentialequationsviaschrodingerisation