There are several companies that specialize in quantum computing. Here are some notable ones:
IBM: IBM is one of the leading companies in the field of quantum computing. They offer access to their quantum computers through the IBM Quantum Experience platform and are actively working on developing more powerful quantum systems.
Google: Google has been working on quantum computing for several years. They are known for their efforts in developing quantum processors, including the creation of a 72-qubit quantum computer called "Bristlecone." Google's quantum computing team is also focused on quantum algorithms and applications.
Microsoft: Microsoft has been investing in quantum computing research through their Microsoft Quantum program. They are developing a topological quantum computer, based on a type of qubit called a Majorana fermion, and are also working on quantum software development tools.
Rigetti Computing: Rigetti is a company that builds and operates superconducting quantum processors. They offer cloud access to their quantum systems and are actively engaged in quantum software development as well.
D-Wave Systems: D-Wave is known for developing quantum annealing systems. Their quantum computers are based on a different approach called adiabatic quantum computing, which is suited for solving optimization problems.
Honeywell: Honeywell is involved in quantum computing and has developed a trapped-ion quantum computer with a high fidelity of operations. They are focused on developing quantum algorithms and applications for solving complex problems.
IonQ: IonQ is a company that specializes in trapped-ion quantum computing. They have developed high-quality qubits and are working on scaling up their quantum systems.
Xanadu: Xanadu is a company that focuses on developing photonic quantum computers. They are working on building quantum processors using integrated photonics technology and are also engaged in quantum software development.
These are just a few examples of companies specializing in quantum computing. The field is rapidly evolving, and many other companies, both large and small, are actively pursuing advancements in this area.