Yahoo Finance·2026-01-29 21:25Core Insights - Rigetti Computing and Quantum Computing represent two distinct investment opportunities in the growing quantum computing market, with Rigetti being an established player and QCi focusing on experimental chips [1]. Company Comparison - Rigetti's stock increased nearly 60% over the past year, while QCi's stock only rose by 3%, indicating Rigetti's stronger market performance [2]. - Quantum computers utilize qubits to store data, allowing for simultaneous processing of zeros and ones, which enhances data handling and task execution speed compared to classical computers [3]. - Both companies are working to overcome the limitations of quantum computing, such as size, cost, power consumption, and error rates, by developing new technologies and more accessible platforms [4]. Technology Overview - Rigetti employs superconducting loops to accelerate electrons, achieving quantum states, but these systems require cryogenic refrigeration, making them costly to operate. They have lower coherence fidelity but higher gate fidelity compared to newer technologies [5]. - QCi focuses on photonic chips that use light for data processing, which can be manufactured in conventional fabs and operate at room temperature. However, they face challenges in scaling and have lower gate fidelity in complex operations [6]. Growth and Services - Rigetti is a "full stack" quantum computing company, producing its own quantum processing units (QPUs) and offering a cloud-based quantum-computing-as-a-service platform called Forest, positioning itself as a comprehensive solution for businesses interested in quantum systems [7].