Fault-Tolerant Measurement-Based Quantum Computing with Continuous-Variable Cluster States 论文

详细信息

发表期刊/会议

Physical Review Letters

发表日期

2014-03-26

发表年份

2014

摘要

A long-standing open question about Gaussian continuous-variable cluster states is whether they enable fault-tolerant measurement-based quantum computation. The answer is yes. Initial squeezing in the cluster above a threshold value of 20.5 dB ensures that errors from finite squeezing acting on encoded qubits are below the fault-tolerance threshold of known qubit-based error-correcting codes. By concatenating with one of these codes and using ancilla-based error correction, fault-tolerant measurement-based quantum computation of theoretically indefinite length is possible with finitely squeezed cluster states.