US 11,989,621 B2
Tiling of cross-resonance gates for quantum circuits
Moein Malekakhlagh, Elmsford, NY (US); Jared Barney Hertzberg, Yorktown Heights, NY (US); Easwar Magesan, Mount Kisco, NY (US); Antonio Corcoles-Gonzalez, Mount Kisco, NY (US); Maika Takita, Croton-on-Hudson, NY (US); David C. Mckay, Ossining, NY (US); and Jason S. Orcutt, Katonah, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Jul. 7, 2021, as Appl. No. 17/369,376.
Prior Publication US 2023/0010740 A1, Jan. 12, 2023
Int. Cl. G06N 10/00 (2022.01)
CPC G06N 10/00 (2019.01) 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a memory that stores computer executable components; and
a processor, operably coupled to the memory, and that executes the computer executable components stored in the memory, wherein the computer executable components comprise:
a tiling component that generates an optimal tiling of cross-resonance gates for a quantum circuit topology, wherein the optimal tiling concurrently maximizes pairwise cross-resonance gate speeds of the cross-resonance gates, minimizes pairwise cross-resonance gate errors of the cross-resonance gates, and minimizes multi-qubit frequency collisions of the cross-resonance gates, and wherein generating the optimal tiling comprises:
generating a cross-resonance gate configuration that delineates control qubit assignments and target qubit assignments in conjunction with a frequency allocation onto a heavy lattice characterizing the quantum circuit topology; and
assigning qubit types to qubits of the heavy lattice, wherein:
respective qubits in each pair of nearest neighboring qubits of the heavy lattice comprises distinct qubit types, and
respective qubits in each pair of next-nearest neighboring qubits of the heavy lattice comprises distinct qubit types.