Testing quantum fault tolerance on small systems
Testing quantum fault tolerance on small systems
复制标题
在小型系统上测试量子容错能力
作者：
D. Willsch;D. Willsch;M. Willsch;M. Willsch;F. Jin;H. Raedt;K. Michielsen;K. Michielsen
我们广泛地测试了最近的协议，以证明量子容错在三个系统上：（1）耦合到具有两级缺陷的环境的五个自旋量子位的实时模拟，（2）transmon量子计算机的实时模拟，以及（3）IBM Q Experience的16量子位处理器。在模拟中，通过数值求解含时薛定谔方程获得整个系统的动力学。我们发现，容错方案提供了一个系统的方法来改善的结果时，误差占主导地位的固有的控制和测量误差存在于transmon系统。然而，该计划未能满足标准的容错时，退相干效应占主导地位。
We extensively test a recent protocol to demonstrate quantum fault tolerance on three systems: (1) a real-time simulation of five spin qubits coupled to an environment with two-level defects, (2) a real-time simulation of transmon quantum computers, and (3) the 16-qubit processor of the IBM Q Experience. In the simulations, the dynamics of the full system is obtained by numerically solving the time-dependent Schrodinger equation. We find that the fault-tolerant scheme provides a systematic way to improve the results when the errors are dominated by the inherent control and measurement errors present in transmon systems. However, the scheme fails to satisfy the criterion for fault tolerance when decoherence effects are dominant.