Decomposing the generalized Toffoli gate with qutrits
Abstract
The problem of finding efficient decompositions of multiqubit gates is of importance for quantum computing, especially, in application to existing noisy intermediate-scale quantum devices, whose resources are substantially limited. Here we propose a decomposition scheme for a generalized N -qubit Toffoli gate with the use of 2 N −3 two-qutrit gates for arbitrary connectivity. The fixed number of the required additional levels (the choice of qutrits is optimal) and the use of the iSWAP gate as a native operation make our approach directly applicable for ongoing experiments with superconducting quantum processors. Specifically, we present a blueprint of the realization of the proposed scheme for the Aspen-9 processor supporting quantum operations with qutrits.
- Publication:
-
Physical Review A
- Pub Date:
- March 2022
- DOI:
- 10.1103/PhysRevA.105.032621
- arXiv:
- arXiv:2112.14535
- Bibcode:
- 2022PhRvA.105c2621N
- Keywords:
-
- Quantum Physics
- E-Print:
- 6 pages, 3 figures, 1 table