Nonlocality, Steering, and Quantum State Tomography in a Single Experiment
Nonlocality, Steering, and Quantum State Tomography in a Single Experiment
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一次实验中的非局域性、转向和量子态断层扫描
DOI：
10.1103/physrevlett.127.020401
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发表时间：
2021
影响因子：
8.6
通讯作者：
Tavakoli Armin
中科院分区：
文献类型：
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作者：
Huang Chang-Jiang;Xiang Guo-Yong;Guo Yu;Wu Kang-Da;Liu Bi-Heng;Li Chuan-Feng;Guo Guang-Can;Tavakoli Armin
我们调查是否范式测量的量子态层析成像，即相互无偏的基础和对称的信息完整的测量，可以用来证明量子相关性。为此，我们确定了一个简单的和噪声鲁棒的相关证人纠缠检测，转向，和非局域性，可以评估的基础上，在断层扫描实验中获得的结果统计。这使我们能够在纠缠量子态上进行状态层析成像，测试爱因斯坦-波多尔斯基-罗森转向和贝尔不等式测试，所有这些都在一个实验中完成。我们还研究了量子相关性和断层摄影完整测量的子集之间的权衡，以及在不同的情况下纠缠的量化。最后，我们进行了一个光子学实验，在这个实验中，我们证明了量子关联在这些灵活的假设下，即双方都信任，一方不信任，双方都不信任。
We investigate whether paradigmatic measurements for quantum state tomography, namely mutually unbiased bases and symmetric informationally complete measurements, can be employed to certify quantum correlations. For this purpose, we identify a simple and noise-robust correlation witness for entanglement detection, steering, and nonlocality that can be evaluated based on the outcome statistics obtained in the tomography experiment. This allows us to perform state tomography on entangled qutrits, a test of Einstein-Podolsky-Rosen steering and a Bell inequality test, all within a single experiment. We also investigate the trade-off between quantum correlations and subsets of tomographically complete measurements as well as the quantification of entanglement in the different scenarios. Finally, we perform a photonics experiment in which we demonstrate quantum correlations under these flexible assumptions, namely with both parties trusted, one party untrusted and both parties untrusted.