The post discusses the unique challenges and requirements of building a fault-tolerant quantum computer compared to NISQ computers, emphasizing the need for sophisticated simulations and detailed blueprints to navigate hardware constraints and imperfections.

The challenge is in going from the less than 100 gates that can be applied on today’s NISQ devices to 10’s of millions needed for the transformative scientific applications and billions needed for the transformative commercial applications. Fault-tolerance is what will allow us to bridge this 10000X gap and that’s why many of the strongest teams in quantum computing are working on building fault-tolerant quantum computers.