David Gross, Yi-Kai Liu, Steven T. Flammia, Stephen Becker, Jens Eisert
TL;DR本论文基于压缩感知建立了量子态重构的方法,该方法仅需使用 Pauli 测量、快速的凸优化,稳健抗噪,适用于仅近似低秩的系统。在没有先验假设下,重构出的状态接近纯态。
Abstract
We establish methods for quantum state tomography based on compressed
sensing. These methods are specialized for quantum states that are fairly pure,
and they offer a significant performance improvement on large quantum systems.
In particular, they are able to reconstruct an unknown de