| 主权项 |
1. An apparatus comprising:
a first pair of logical superconducting units for use in computation, each logical superconducting unit being configured to have quantum states that can be spanned over Pauli operator σsji, where i=x, y, or z; a first pair of control superconducting units for use in assisting the computation without being a computational unit, each control superconducting unit being configured to have quantum states that can be spanned over Pauli operator σcki, where i=x, y, or z; a first coupler between a first logical superconducting unit and a second logical superconducting unit, wherein when a magnetic field is applied along a z direction, the first coupler couples a quantum operator σs1z of the first logical superconducting unit with a quantum operator σs2z of the second logical superconducting unit in a first coupling represented by σs1z σs2z; a second coupler between a first control logical superconducting unit and a control second superconducting unit, wherein when a magnetic field is applied along a z direction, the second coupler couples a quantum operator σc1z of the first control superconducting unit with a quantum operator σc2z of the second control superconducting unit in a second coupling represented by σc1z σc2z; a third coupler between the first logical superconducting unit and the second control superconducting unit, wherein when the magnetic field along the z direction is applied, the third coupler couples a quantum operator σs1z of the first superconducting unit with a quantum operator σc2z of the second superconducting unit in a third coupling represented by σs1xσc2z; and a fourth coupler between the second logical superconducting unit and the first control superconducting unit, wherein when the magnetic field along the z direction is applied, the fourth coupler couples a quantum operator σs2z of the first superconducting unit with a quantum operator σc1z of the second superconducting unit in a fourth coupling represented by σs2xσc1z. |
