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Can Classical Initialization Help Variational Quantum Circuits Escape the Barren Plateau?

  • Yifeng Peng
  • , Xinyi Li
  • , Zhemin Zhang
  • , Samuel Yen Chi Chen
  • , Zhiding Liang
  • , Ying Wang
  • Stevens Institute of Technology
  • Rensselaer Polytechnic Institute
  • Wells Fargo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Variational quantum algorithms (VQAs) have emerged as a leading paradigm in near-term quantum computing, yet their performance can be hindered by the so-called barren plateau problem, where gradients vanish exponentially with system size or circuit depth. While most existing VQA research employs simple Gaussian or zero-initialization schemes, classical deep learning has long benefited from sophisticated weight initialization strategies such as Xavier, He, and orthogonal initialization to improve gradient flow and expedite convergence. In this work, we systematically investigate whether these classical methods can mitigate barren plateaus in quantum circuits. We first review each initialization's theoretical grounding and outline how to adapt the notions from neural networks to VQAs. We then conduct extensive numerical experiments on various circuit architectures and optimization tasks. Our findings indicate that while the initial heuristics, inspired by classical initialization, yield moderate improvements in certain experiments, their overall benefits remain marginal. By outlining a preliminary exploration plan in this paper, we aim to offer the research community a broader perspective and accessible demonstrations. Furthermore, we propose future research directions that may be further refined by leveraging the insights gained from this work.

Original languageEnglish
Title of host publicationTechnical Papers Program
EditorsCandace Culhane, Greg Byrd, Hausi Muller, Andrea Delgado, Stephan Eidenbenz
Pages1708-1714
Number of pages7
ISBN (Electronic)9798331557362
DOIs
StatePublished - 2025
Event6th IEEE International Conference on Quantum Computing and Engineering, QCE 2025 - Albuquerque, United States
Duration: 31 Aug 20255 Sep 2025

Publication series

NameProceedings - IEEE Quantum Week 2025, QCE 2025
Volume1

Conference

Conference6th IEEE International Conference on Quantum Computing and Engineering, QCE 2025
Country/TerritoryUnited States
CityAlbuquerque
Period31/08/255/09/25

Keywords

  • Barren Plateau
  • Initialization Methods
  • Variational Quantum Algorithms

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