公开(公告)号：US11416761B2

公开(公告)日：2022-08-16

申请号：US16856274

申请日：2020-04-23

Applicant: Microsoft Technology Licensing, LLC

Inventor： Nicolas Guillaume Delfosse ,  Krysta Marie Svore ,  Benjamin Walter Reichardt

IPC: G06N10/00 ,  B82Y10/00 ,  H03K19/195

Abstract: A quantum computing system is adapted to prepare a cat state in a quantum circuit with fault tolerance t and circuit depth less than or equal to 4+4t by performing a series of operations that includes: performing a sequence of joint parity measurements on individual pairs of neighboring qubits in a series of qubits entangled to form an initial cat state; repeating the sequence of measurements over at least t-rounds; and disentangling a first set of alternating qubits from the initial cat state, the prepared cat state being formed by a remaining second set of alternating qubits, the second set of alternating qubits being interlaced with the first set of alternating qubits along a line of one-dimensional connectivity, the series of operations being sufficient to guarantee that a prepared cat state is has less than or equal to t number of faults.