Stabilizer measurement time slot design method of quantum surface code

• Main Authors: LYU XIAOJIE, ZHAO NAN, HE XIANDENG, KWON DONG-HYO, CAO MINGYUE, YI YUNHUI, ZHU CHANGHUA, CHEN NAN
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRICITY; PHYSICS; PULSE TECHNIQUE

The invention provides a method for avoiding introduction of a logic error during measurement of a stabilizer, and mainly solves the problems of large limitation of time slot sequence types and single time slot shape of the stabilizer in a traditional method. According to the implementation scheme, the method comprises the following steps: constructing a surface code model of a quantum rotating lattice; analyzing the condition of introducing a logic X error and a logic Z error in the given surface code model; time slot laws for effectively avoiding introduction of logic errors when the X stabilizer and the Z stabilizer are measured are obtained according to error introduction conditions; designing a time slot sequence according to a rule of avoiding introduction of a logic error; combining the designed time slot sequence in the surface code model according to requirements; and adjusting the measurement line of the corresponding stabilizer according to the time slot combination, introducing errors of the same