" They have been working on developing superconducting qubit-based quantum computers.
Microsoft is another notable player in the field, with its Microsoft Quantum program. They have been researching and developing a topological qubit-based quantum computer called the Microsoft Quantum Development Kit.
Rigetti Computing is a company focused on building and delivering integrated quantum computing systems. They are known for their hybrid quantum-classical approach and have developed the Rigetti Quantum Cloud Service.
IonQ is a company that has been working on trapped-ion quantum computers. They aim to build powerful and scalable quantum systems for practical applications.
D-Wave Systems, on the other hand, is known for its development of quantum annealing-based computers, known as D-Wave machines.
It's important to note that the quantum computing landscape is rapidly evolving, and there may be other companies or significant advancements in the field . I would recommend conducting further research to get the most up-to-date information on the specific company you are interested in.