A recent study led by Princeton University researchers, in collaboration with University of Maryland and IBM, explored the architectural design of quantum computers (QC). In a paper presented at the 2019 ACM/IEEE International Symposium on Computer Architecture, the researchers performed the largest real-system evaluation of quantum computers to date, using seven quantum computers from IBM, Rigetti and the University of Maryland.



The researchers developed new software to compile from QC applications to prototypes; on error-prone early-stage QC hardware, this compiler delivers up to 28 times improvement in program correctness rates compared to industry compilers. The study stresses the importance of careful instruction set design, rich connectivity topologies and the need to co-design applications and hardware to achieve the best performance from fledgling QC systems.

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