US 12,204,992 B2
Implementing qubit gates using phase-shifted microwave pulses
Dawei Ding, San Diego, CA (US); Jianxin Chen, Kirkland, WA (US); and Jiachen Huang, San Mateo, CA (US)
Assigned to Alibaba Innovation Private Limited, Singapore (SG)
Filed by Alibaba Innovation Private Limited, Singapore (SG)
Filed on Apr. 29, 2021, as Appl. No. 17/244,930.
Prior Publication US 2023/0141379 A1, May 11, 2023
Int. Cl. G06N 10/20 (2022.01); G06N 10/40 (2022.01); H03K 19/195 (2006.01)
CPC G06N 10/20 (2022.01) [G06N 10/40 (2022.01); H03K 19/195 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A system for applying a single-qubit quantum gate having a unitary specifiable by at least a first real parameter, a second real parameter, and a third real parameter, the system comprising:
a qubit; and
a quantum controller coupled to the qubit by a driveline and configured to:
apply a sequence of phase-shifted Pauli gates to the qubit to implement the single-qubit quantum gate, each phase-shifted Pauli gate in the sequence having a rotation angle and a phase shift; and
wherein the first, second, and third real parameters correspond to:
a rotation angle in the sequence and the phase shifts in the sequence; or
the phase shifts in the sequence.