论文标题
量子电路中延迟选择的量子擦除的互补关系
Complementarity relations of a delayed-choice quantum eraser in a quantum circuit
论文作者
论文摘要
我们提出了一个量子电路，该量子电路通过两分部分的纠缠来模拟延迟选择的量子擦除，并以延伸程度，即两个配对定量之间的纠缠程度是可调的。这提供了一个更广泛的设置，以测试干扰可见性与哪种区分性之间的互补关系，即通过纠缠获得哪个信息，而无需直接与量子状态接触以进行干扰。可见性与可见性关系是从三个角度研究的，这些角度在考虑哪个信息的方式方面有所不同。这些互补关系可以从信息理论框架中的熵不确定性关系以及结合单粒子和两部分特性的试验关系中理解。然后，我们在IBM量子平台提供的量子计算机上执行实验，以验证理论预测。我们还应用延迟门来延迟测量哪种信息，以确认可以以“延迟选择”方式真正进行测量。
We propose a quantum circuit that emulates a delayed-choice quantum eraser via bipartite entanglement with the extension that the degree of entanglement between the two paired quantons is adjustable. This provides a broader setting to test complementarity relations between interference visibility and which-way distinguishability in the scenario that the which-way information is obtained through entanglement without direct contact with the quantum state for interference. The visibility-distinguishability relations are investigated from three perspectives that differ in how the which-way information is taken into consideration. These complementarity relations can be understood in terms of entropic uncertainty relations in the information-theoretic framework and the triality relation that incorporates single-particle and bipartite properties. We then perform experiments on the quantum computers provided by the IBM Quantum platform to verify the theoretical predictions. We also apply the delay gate to delay the measurement of the which-way information to affirm that the measurement can be made truly in the "delayed-choice" manner.
