Evolutionary Quantum Architecture Search for Parametrized Quantum Circuits
Li Ding, Lee Spector

TL;DR
This paper introduces EQAS-PQC, an evolutionary framework that optimizes parameterized quantum circuit architectures for reinforcement learning, demonstrating significant performance improvements and insights into essential design choices.
Contribution
It presents a novel evolutionary quantum architecture search method for PQCs, exploring the design space to enhance quantum-classical learning models.
Findings
Significant performance improvements in benchmark RL tasks.
Identification of critical quantum operation design choices.
Modeling of quantum operation distributions in top architectures.
Abstract
Recent advancements in quantum computing have shown promising computational advantages in many problem areas. As one of those areas with increasing attention, hybrid quantum-classical machine learning systems have demonstrated the capability to solve various data-driven learning tasks. Recent works show that parameterized quantum circuits (PQCs) can be used to solve challenging reinforcement learning (RL) tasks with provable learning advantages. While existing works yield potentials of PQC-based methods, the design choices of PQC architectures and their influences on the learning tasks are generally underexplored. In this work, we introduce EQAS-PQC, an evolutionary quantum architecture search framework for PQC-based models, which uses a population-based genetic algorithm to evolve PQC architectures by exploring the search space of quantum operations. Experimental results show that our…
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