论文标题
比较单线测试方案
Comparing Singlet Testing Schemes
论文作者
论文摘要
我们比较了测试两个政党是否共享两个Quibit Singlet状态的方案。第一个标准方案测试Braunstein-Caves（或CHSH）不平等，比较了从固定有限设置中得出的局部测量值与单元的量子预测的相关性。第二个替代方案测试了局部测量的相关性，该相关性是根据$θ$分离在Bloch球体上的量子预测的$θ$的集合。我们将每个方案作为假设检验制定，然后在许多涉及窃听器改变或替换单重量尺的对抗场景中评估测试能力。在大多数自然情况下，我们发现“随机测量”测试是优越的。
We compare schemes for testing whether two parties share a two-qubit singlet state. The first, standard, scheme tests Braunstein-Caves (or CHSH) inequalities, comparing the correlations of local measurements drawn from a fixed finite set against the quantum predictions for a singlet. The second, alternative, scheme tests the correlations of local measurements, drawn randomly from the set of those that are $θ$-separated on the Bloch sphere, against the quantum predictions. We formulate each scheme as a hypothesis test and then evaluate the test power in a number of adversarial scenarios involving an eavesdropper altering or replacing the singlet qubits. We find the `random measurement' test to be superior in most natural scenarios.
