The foregoing list of factors is not exhaustive. Classiq brings the quantum software stack to a new level of abstraction, empowering quantum software developers and enabling the development of world-changing quantum algorithms and applications. The company is also building Deltaflow. Surface codes drive the field toward a scaling bottleneck. At that point, IBM hopes this system will solve problems more efficiently than a supercomputer. Rigetti serves customers in finance, insurance, pharmaceuticals, defence, and energy with custom software and full-stack solutions focused on simulation, optimisation, and machine learning applications. IBM has over 20 quantum computers around the world, and customers can access them through the cloud.