IonQ, Inc.

IonQ, Inc. is an American company specializing in quantum computing hardware and software, headquartered in College Park, Maryland. Its core mission is to develop the world's best quantum computers to address highly complex problems, aiming to positively transform business, society, and the planet.

The company develops general-purpose trapped ion quantum computers and associated software to generate, optimize, and execute quantum circuits. IonQ provides access to its quantum computing systems through major cloud platforms such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud, in addition to its own cloud service. Beyond quantum computing, IonQ's offerings extend to quantum networking, quantum security solutions like quantum key distribution, and advanced quantum sensing technologies.

IonQ became a publicly traded company in October 2021 following a merger with a special-purpose acquisition company (SPAC). Niccolò de Masi assumed the roles of President and CEO in February 2025, and Chairman of the Board in August 2025. The company has demonstrated an aggressive growth strategy through recent acquisitions, including Qubitekk for quantum networking, ID Quantique for quantum-safe cryptography, Capella Space for space-based quantum key distribution, Vector Atomic for quantum sensors, and SkyWater Technology for semiconductor manufacturing. In April 2026, IonQ secured a contract from DARPA for its quantum computing research program and a $151 billion contract under the SHIELD program, further solidifying its presence in the defense and aerospace sectors. IonQ is recognized as a leader in the quantum computing industry, particularly for its high-fidelity trapped-ion technology.