The metaverse is a virtual and physical world that integrates virtual and physical realities using the latest technologies such as artificial intelligence, blockchain, and extended reality. However, as metaverse environments grow and become more sophisticated, classical computing models are no longer able to keep up with the computational, security, and scalability demands of these virtual worlds. Quantum computing offers a breakthrough solution by using concepts such as superposition and entanglement to speed up data processing, security, and artificial intelligence-based automation. This review explores the integration of quantum computing with the metaverse, focusing on its envisioned applications, such as quantum-aided artificial intelligence, post-quantum cryptography, and ultra-high-speed, secure quantum networking. This study highlights key challenges such as quantum hardware constraints, compatibility with classical computing systems, and ethics of digital economies fueled by quantum. Through an analysis of recent developments, gaps in research, and future directions, this chapter offers a holistic guide to how quantum computing can be used to transform metaverse ecosystems. The insights presented aim to provide researchers, developers, and decision-makers on how to develop an optimized and secure quantum-enabled metaverse.