Bridging the Gap Between NISQ Variational Algorithms and SW/HW Architectures Constraints

Variational algorithms are key candidate algorithms for achieving a quantum advantage in the NISQ era. Variational algorithms require close communication between classical algorithms running on a classical processor such as CPUs and quantum circuits running on a quantum processor. Efficient communication between the two, and fast reconfiguration of the quantum control sequence is key to achieving maximal utilization of quantum computation resources.

Here we discuss quantum control software/hardware architectures constraints and bottlenecks for variational algorithms execution and how both the algorithms as well as the SW/HW architectures may be considered together to enable optimized performance and utilization, which could accelerate the timeline towards such an advantage.