Youngseok Kim, Andrew Eddins, et al.
APS March Meeting 2023
We describe an optimal procedure, as well as its efficient software implementation, for exact and approximate synthesis of two-qubit unitary operations into any prescribed discrete family of XX-type interactions and local gates. This arises from the analysis and manipulation of certain polyhedral subsets of the space of canonical gates. Using this, we analyze which small sets of XX-type interactions cause the greatest improvement in expected infidelity under experimentally-motivated error models. For the exact circuit synthesis of Haar-randomly selected two-qubit operations, we find an improvement in estimated infidelity by 31.4% when including alongside CX its square- and cube-roots, near to the optimal limit of 36.9% obtained by including all fractional applications of CX.
Youngseok Kim, Andrew Eddins, et al.
APS March Meeting 2023
Hong-ye Hu, Andi Gu, et al.
APS March Meeting 2024
Max Rossmannek, Samuele Piccinelli
ACS Fall 2025
Jay Gambetta
ACS Spring 2025