US 11,755,943 B2
Randomized benchmarking by exploiting the structure of the clifford group
Dmitri Maslov, New Canaan, CT (US); Sergey Bravyi, Yorktown Heights, NY (US); and Jay Michael Gambetta, Yorktown Heights, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Jan. 12, 2023, as Appl. No. 18/153,786.
Application 18/153,786 is a continuation of application No. 16/872,962, filed on May 12, 2020, granted, now 11,556,832.
Prior Publication US 2023/0153670 A1, May 18, 2023
Int. Cl. G06N 10/00 (2022.01); H03K 19/20 (2006.01); H03K 19/195 (2006.01); G06N 10/20 (2022.01)
CPC G06N 10/00 (2019.01) [G06N 10/20 (2022.01); H03K 19/195 (2013.01); H03K 19/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of generating a randomized benchmarking protocol comprising:
providing a randomly generated plurality of Hadamard gates;
generating randomly a plurality of Hadamard-free Clifford circuits comprising a phase (P) gate and conditional NOT (CNOT) gate;
combining each of the generated plurality of Hadamard-free Clifford circuits with corresponding each of the randomly generated plurality of Hadamard gates to form a sequence of alternating Hadamard-free Clifford-Hadamard pairs circuit to form the randomized benchmarking protocol; and
measuring noise in a quantum mechanical processor using the randomized benchmarking protocol.